Notice that at the bottom right corner of the VSCode window, there is a Go Live<\/strong> button.<\/p>\n\n
<\/p>\n\n
Clicking this button will activate the Live Server<\/strong> extension. A local development server will be started, hosting the index.html file you just created.<\/p>\n\n
<\/p>\n\n
Of course, the file is still empty right now, so you can't see anything. Add something between the
\n\n \n \n \n Document<\/title>\n <\/head>\n <body>\n Hello, world!\n <\/body>\n<\/html>\n<\/pre>\n\n\n\n<p>Save the changes, and the webpage will be automatically refreshed with the new content.<\/p>\n\n<p><img src=\"https:\/\/img.php.cn\/upload\/article\/000\/000\/000\/173617272129442.jpg\" alt=\"Fundamentals of HTML and CSS\"><\/p>\n\n<h2>\n \n \n The structure of an HTML document\n<\/h2>\n\n<p>A typical HTML document always has the following structure:<br>\n<\/p>\n\n<pre><!DOCTYPE html>\n<html lang=\"en\">\n <head>\n . . .\n <\/head>\n <body>\n . . .\n <\/body>\n<\/html>\n<\/pre>\n\n\n\n<p>The <!DOCTYPE html> tag defines the document type. When the web browser encounters <!DOCTYPE html>, it understands that the page should be parsed and displayed according to the specifications of HTML5, the latest version of HTML standard. This ensures that modern browsers interpret the webpage's content and layout correctly.<\/p>\n\n<p>Everything else in the file should be enclosed inside an <html> element, defined by an opening tag (<html>) and a closing tag (<\/html>).<\/p>\n\n<p>lang is called an attribute, and it has the value \"en\". This tells the browser as well as the search engine that English is the primary language used for this webpage.<\/p>\n\n<p>Inside the <html> element, there are two child elements, <head> and <body>. <head> contains metadata and other information about the HTML document. This information will not be displayed in the browser but is often used by search engines for SEO (Search Engine Optimization) purposes.<\/p>\n\n<p><body>, on the other hand, contains the main content of the webpage that is visible to the users, and for that reason, it is also the part of the HTML file we are going to focus on in this course.<\/p>\n\n<h2>\n \n \n Elements and attributes\n<\/h2>\n\n<p>Let's take a closer look at the previous example and notice that the HTML document comprises different elements in a nested structure. In HTML, most elements have both an opening tag and a closing tag:<br>\n<\/p>\n<pre><!DOCTYPE html>\n<html lang=\"en\">\n <head>\n <meta charset=\"UTF-8\" \/>\n <meta name=\"viewport\" content=\"width=device-width, initial-scale=1.0\" \/>\n <title>Document<\/title>\n <\/head>\n <body><\/body>\n<\/html>\n<\/pre>\n\n\n\n<p>In this case, <tag> is the opening tag, and <\/tag> is the closing tag, and together, they form an HTML element. An element could hold textual content between the opening and closing tags.<br>\n<\/p>\n\n<pre><!DOCTYPE html>\n<html lang=\"en\">\n <head>\n <meta charset=\"UTF-8\" \/>\n <meta name=\"viewport\" content=\"width=device-width, initial-scale=1.0\" \/>\n <title>Document<\/title>\n <\/head>\n <body>\n Hello, world!\n <\/body>\n<\/html>\n<\/pre>\n\n\n\n<p>The element can also wrap around other elements, forming a nested structure.<br>\n<\/p>\n\n<pre><!DOCTYPE html>\n<html lang=\"en\">\n <head>\n . . .\n <\/head>\n <body>\n . . .\n <\/body>\n<\/html>\n<\/pre>\n\n\n\n<p>Inside the opening tag, you can define attributes, which are used to specify additional information about the element, such as its class, id, and so on.<br>\n<\/p>\n\n<pre><tag>. . .<\/tag>\n<\/pre>\n\n\n\n<p>The attribute is usually in a key\/value pair, and the value must always be enclosed inside matching quotes (double or single).<\/p>\n\n<p>There are some exceptions to these general formats. For example, the <br> element, which creates a line break, does not need a closing tag. Some attributes, such as multiple, do not require a value. We will discuss these exceptions later in this course as we encounter them.<\/p>\n\n<p>However, you should remember that if an element does require a closing tag, then it should never be left out. In most cases, the webpage could still render correctly, but as the structure of your HTML document grows more complex, unexpected errors may occur. Take a look at our best practice guidelines for writing HTML and CSS if you are interested.<\/p>\n\n<h2>\n \n \n Further readings\n<\/h2>\n\n<ul>\n<li>Introducing the Cascading Style Sheet (CSS)<\/li>\n<li>Introduction to JavaScript<\/li>\n<li>What is Responsive Design<\/li>\n<li>How to Build Interactive Forms Using HTML and CSS<\/li>\n<\/ul>\n\n\n \n\n \n\n \n "} </script>
<meta http-equiv="Cache-Control" content="no-transform" />
<meta http-equiv="Cache-Control" content="no-siteapp" />
<script>var V_PATH="/";window.onerror=function(){ return true; };</script>
</head>
<body data-commit-time="2023-12-28T14:50:12+08:00" class="editor_body body2_2">
<link rel="stylesheet" type="text/css" href="/static/csshw/stylehw.css">
<header>
<div id="377j5v51b" class="head">
<div id="377j5v51b" class="haed_left">
<div id="377j5v51b" class="haed_logo">
<a href="http://miracleart.cn/" title="" class="haed_logo_a">
<img src="/static/imghw/logo.png" alt="" class="haed_logoimg">
</a>
</div>
<div id="377j5v51b" class="head_nav">
<div id="377j5v51b" class="head_navs">
<a href="javascript:;" title="Community" class="head_nava head_nava-template1">Community</a>
<div class="377j5v51b" id="dropdown-template1" style="display: none;">
<div id="377j5v51b" class="languagechoose">
<a href="http://miracleart.cn/article.html" title="Articles" class="languagechoosea on">Articles</a>
<a href="http://miracleart.cn/faq/zt" title="Topics" class="languagechoosea">Topics</a>
<a href="http://miracleart.cn/wenda.html" title="Q&A" class="languagechoosea">Q&A</a>
</div>
</div>
</div>
<div id="377j5v51b" class="head_navs">
<a href="javascript:;" title="Learn" class="head_nava head_nava-template1_1">Learn</a>
<div class="377j5v51b" id="dropdown-template1_1" style="display: none;">
<div id="377j5v51b" class="languagechoose">
<a href="http://miracleart.cn/course.html" title="Course" class="languagechoosea on">Course</a>
<a href="http://miracleart.cn/dic/" title="Programming Dictionary" class="languagechoosea">Programming Dictionary</a>
</div>
</div>
</div>
<div id="377j5v51b" class="head_navs">
<a href="javascript:;" title="Tools Library" class="head_nava head_nava-template1_2">Tools Library</a>
<div class="377j5v51b" id="dropdown-template1_2" style="display: none;">
<div id="377j5v51b" class="languagechoose">
<a href="http://miracleart.cn/toolset/development-tools" title="Development tools" class="languagechoosea on">Development tools</a>
<a href="http://miracleart.cn/toolset/website-source-code" title="Website Source Code" class="languagechoosea">Website Source Code</a>
<a href="http://miracleart.cn/toolset/php-libraries" title="PHP Libraries" class="languagechoosea">PHP Libraries</a>
<a href="http://miracleart.cn/toolset/js-special-effects" title="JS special effects" class="languagechoosea on">JS special effects</a>
<a href="http://miracleart.cn/toolset/website-materials" title="Website Materials" class="languagechoosea on">Website Materials</a>
<a href="http://miracleart.cn/toolset/extension-plug-ins" title="Extension plug-ins" class="languagechoosea on">Extension plug-ins</a>
</div>
</div>
</div>
<div id="377j5v51b" class="head_navs">
<a href="http://miracleart.cn/ai" title="AI Tools" class="head_nava head_nava-template1_3">AI Tools</a>
</div>
<div id="377j5v51b" class="head_navs">
<a href="javascript:;" title="Leisure" class="head_nava head_nava-template1_3">Leisure</a>
<div class="377j5v51b" id="dropdown-template1_3" style="display: none;">
<div id="377j5v51b" class="languagechoose">
<a href="http://miracleart.cn/game" title="Game Download" class="languagechoosea on">Game Download</a>
<a href="http://miracleart.cn/mobile-game-tutorial/" title="Game Tutorials" class="languagechoosea">Game Tutorials</a>
</div>
</div>
</div>
</div>
</div>
<div id="377j5v51b" class="head_search">
<input id="key_words" onkeydown="if (event.keyCode == 13) searchs('en')" class="search-input" type="text" autocomplete="off" name="keywords" required="required" placeholder="Block,address,transaction,news" value="">
<a href="javascript:;" title="search" onclick="searchs('en')"><img src="/static/imghw/find.png" alt="search"></a>
</div>
<div id="377j5v51b" class="head_right">
<div id="377j5v51b" class="haed_language">
<a href="javascript:;" class="layui-btn haed_language_btn">English<i class="layui-icon layui-icon-triangle-d"></i></a>
<div class="377j5v51b" id="dropdown-template" style="display: none;">
<div id="377j5v51b" class="languagechoose">
<a href="javascript:setlang('zh-cn');" title="簡體中文" class="languagechoosea">簡體中文</a>
<a href="javascript:;" title="English" class="languagechoosea">English</a>
<a href="javascript:setlang('zh-tw');" title="繁體中文" class="languagechoosea">繁體中文</a>
<a href="javascript:setlang('ja');" title="日本語" class="languagechoosea">日本語</a>
<a href="javascript:setlang('ko');" title="???" class="languagechoosea">???</a>
<a href="javascript:setlang('ms');" title="Melayu" class="languagechoosea">Melayu</a>
<a href="javascript:setlang('fr');" title="Fran?ais" class="languagechoosea">Fran?ais</a>
<a href="javascript:setlang('de');" title="Deutsch" class="languagechoosea">Deutsch</a>
</div>
</div>
</div>
<span id="377j5v51b" class="head_right_line"></span>
<div style="display: block;" id="login" class="haed_login ">
<a href="javascript:;" title="Login" class="haed_logina ">Login</a>
</div>
<div style="display: block;" id="reg" class="head_signup login">
<a href="javascript:;" title="singup" class="head_signupa">singup</a>
</div>
</div>
</div>
</header>
<main>
<div id="377j5v51b" class="Article_Details_main">
<div id="377j5v51b" class="Article_Details_main1">
<div id="377j5v51b" class="Article_Details_main1M">
<div id="377j5v51b" class="phpgenera_Details_mainL1">
<a href="http://miracleart.cn/" title="Home"
class="phpgenera_Details_mainL1a">Home</a>
<img src="/static/imghw/top_right.png" alt="" />
<a href="http://miracleart.cn/web-designer.html"
class="phpgenera_Details_mainL1a">Web Front-end</a>
<img src="/static/imghw/top_right.png" alt="" />
<a href="http://miracleart.cn/css-tutorial.html"
class="phpgenera_Details_mainL1a">CSS Tutorial</a>
<img src="/static/imghw/top_right.png" alt="" />
<span>Fundamentals of HTML and CSS</span>
</div>
<div id="377j5v51b" class="Articlelist_txts">
<div id="377j5v51b" class="Articlelist_txts_info">
<h1 class="Articlelist_txts_title">Fundamentals of HTML and CSS</h1>
<div id="377j5v51b" class="Articlelist_txts_info_head">
<div id="377j5v51b" class="author_info">
<a href="http://miracleart.cn/member/1468489.html" class="author_avatar">
<img class="lazy" data-src="https://img.php.cn/upload/avatar/000/000/001/66ea8199266e8412.png" src="/static/imghw/default1.png" alt="Linda Hamilton">
</a>
<div id="377j5v51b" class="author_detail">
<a href="http://miracleart.cn/member/1468489.html" class="author_name">Linda Hamilton</a>
</div>
</div>
</div>
<span id="377j5v51b" class="Articlelist_txts_time">Jan 06, 2025 pm 10:11 PM</span>
</div>
</div>
<hr />
<div id="377j5v51b" class="article_main php-article">
<div id="377j5v51b" class="article-list-left detail-content-wrap content">
<ins class="adsbygoogle"
style="display:block; text-align:center;"
data-ad-layout="in-article"
data-ad-format="fluid"
data-ad-client="ca-pub-5902227090019525"
data-ad-slot="3461856641">
</ins>
<p>HTML and CSS are the most fundamental building blocks of a webpage, and they are also your first step towards becoming a web developer. HTML provides the layout and content of the webpage, and CSS defines its style and appearance. In this tutorial, we are going to cover the basics of HTML and CSS, and by the end, you will be able to design responsive webpages that work seamlessly on devices of all sizes.</p>
<h2>
What is HTML?
</h2>
<p>HTML is the standard markup language used to create webpages. It defines the structure and content of webpages using HTML elements such as headings, paragraphs, images, links, forms, and more.</p>
<p>To start writing HTML code, you can use the CodePen demo below:</p>
<p>Code Demo ?</p>
<p>On the left side, you will find the HTML source code, which is essentially the blueprint for what will be displayed. The browser will then transform this blueprint into the webpage you see on the right side.</p>
<p>You can modify the source code directly to see how it affects the displayed webpage.</p>
<h2>
Prepare your computer for web development
</h2>
<p>Of course, in practice, you cannot rely on tools such as CodePen to create a working and fully featured web application. You need something more powerful, so, let's set up your computer for web development.</p>
<p>To get started, make sure you have a browser installed. Any popular web browser such as Google Chrome, Microsoft Edge, Safari, or Firefox, should be sufficient for this course. You may download and install the browser from the linked websites.</p>
<p>In addition, you'll need a code editor to write and edit your code. Visual Studio Code is a great option for beginners (and professionals, for that matter). It is the most commonly used code editor in the world. Simply download the appropriate installer for your operating system from their official website.</p>
<p><img src="/static/imghw/default1.png" data-src="https://img.php.cn/upload/article/000/000/000/173617271157796.jpg" class="lazy" alt="Fundamentals of HTML and CSS"></p>
<p>After you've installed VSCode, make sure to install the <strong>Live Server</strong> extension as well. Navigate to the <strong>Extensions</strong> tab on the left sidebar, and type in <strong>Live Server</strong> in the search box. From there, you'll be able to download and install the extension.</p>
<p><img src="/static/imghw/default1.png" data-src="https://img.php.cn/upload/article/000/000/000/173617271255420.jpg" class="lazy" alt="Fundamentals of HTML and CSS"></p>
<p><strong>Live Server</strong> will create a local development server with the auto-reload feature. For example, create a new work directory and open it using VSCode.</p>
<p><img src="/static/imghw/default1.png" data-src="https://img.php.cn/upload/article/000/000/000/173617271512988.jpg" class="lazy" alt="Fundamentals of HTML and CSS"></p>
<p>Create a new file named index.html under this directory. The .html extension indicates that this is an HTML document. Type in ! in VSCode, and you will see suggestions like this:</p>
<p><img src="/static/imghw/default1.png" data-src="https://img.php.cn/upload/article/000/000/000/173617271776671.jpg" class="lazy" alt="Fundamentals of HTML and CSS"></p>
<p>This is a shortcut for creating HTML documents quickly. You can navigate with the ↑ or ↓ keys. Select the first option, and the following code should be generated.<br>
</p>
<pre class="brush:php;toolbar:false"><!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8" />
<meta name="viewport" content="width=device-width, initial-scale=1.0" />
<title>Document</title>
</head>
<body></body>
</html>
</pre>
<p>Notice that at the bottom right corner of the VSCode window, there is a <strong>Go Live</strong> button.</p>
<p><img src="/static/imghw/default1.png" data-src="https://img.php.cn/upload/article/000/000/000/173617271945701.jpg" class="lazy" alt="Fundamentals of HTML and CSS"></p>
<p>Clicking this button will activate the <strong>Live Server</strong> extension. A local development server will be started, hosting the index.html file you just created.</p>
<p><img src="/static/imghw/default1.png" data-src="https://img.php.cn/upload/article/000/000/000/173617272021543.jpg" class="lazy" alt="Fundamentals of HTML and CSS"></p>
<p>Of course, the file is still empty right now, so you can't see anything. Add something between the <body> and
</body> tags.<br>
</p>
<pre class="brush:php;toolbar:false"><!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8" />
<meta name="viewport" content="width=device-width, initial-scale=1.0" />
<title>Document</title>
</head>
<body>
Hello, world!
</body>
</html>
</pre>
<p>Save the changes, and the webpage will be automatically refreshed with the new content.</p>
<p><img src="/static/imghw/default1.png" data-src="https://img.php.cn/upload/article/000/000/000/173617272129442.jpg" class="lazy" alt="Fundamentals of HTML and CSS"></p>
<h2>
The structure of an HTML document
</h2>
<p>A typical HTML document always has the following structure:<br>
</p>
<pre class="brush:php;toolbar:false"><!DOCTYPE html>
<html lang="en">
<head>
. . .
</head>
<body>
. . .
</body>
</html>
</pre>
<p>The <!DOCTYPE html> tag defines the document type. When the web browser encounters <!DOCTYPE html>, it understands that the page should be parsed and displayed according to the specifications of HTML5, the latest version of HTML standard. This ensures that modern browsers interpret the webpage's content and layout correctly.</p>
<p>Everything else in the file should be enclosed inside an <html> element, defined by an opening tag (<html>) and a closing tag (</html>).</p>
<p>lang is called an attribute, and it has the value "en". This tells the browser as well as the search engine that English is the primary language used for this webpage.</p>
<p>Inside the <html> element, there are two child elements, <head> and <body>. <head> contains metadata and other information about the HTML document. This information will not be displayed in the browser but is often used by search engines for SEO (Search Engine Optimization) purposes.</p>
<p><body>, on the other hand, contains the main content of the webpage that is visible to the users, and for that reason, it is also the part of the HTML file we are going to focus on in this course.</p>
<h2>
Elements and attributes
</h2>
<p>Let's take a closer look at the previous example and notice that the HTML document comprises different elements in a nested structure. In HTML, most elements have both an opening tag and a closing tag:<br>
</p>
<pre class="brush:php;toolbar:false"><!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8" />
<meta name="viewport" content="width=device-width, initial-scale=1.0" />
<title>Document</title>
</head>
<body></body>
</html>
</pre>
<p>In this case, <tag> is the opening tag, and </tag> is the closing tag, and together, they form an HTML element. An element could hold textual content between the opening and closing tags.<br>
</p>
<pre class="brush:php;toolbar:false"><!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8" />
<meta name="viewport" content="width=device-width, initial-scale=1.0" />
<title>Document</title>
</head>
<body>
Hello, world!
</body>
</html>
</pre>
<p>The element can also wrap around other elements, forming a nested structure.<br>
</p>
<pre class="brush:php;toolbar:false"><!DOCTYPE html>
<html lang="en">
<head>
. . .
</head>
<body>
. . .
</body>
</html>
</pre>
<p>Inside the opening tag, you can define attributes, which are used to specify additional information about the element, such as its class, id, and so on.<br>
</p>
<pre class="brush:php;toolbar:false"><tag>. . .</tag>
</pre>
<p>The attribute is usually in a key/value pair, and the value must always be enclosed inside matching quotes (double or single).</p>
<p>There are some exceptions to these general formats. For example, the <br> element, which creates a line break, does not need a closing tag. Some attributes, such as multiple, do not require a value. We will discuss these exceptions later in this course as we encounter them.</p>
<p>However, you should remember that if an element does require a closing tag, then it should never be left out. In most cases, the webpage could still render correctly, but as the structure of your HTML document grows more complex, unexpected errors may occur. Take a look at our best practice guidelines for writing HTML and CSS if you are interested.</p>
<h2>
Further readings
</h2>
<ul>
<li>Introducing the Cascading Style Sheet (CSS)</li>
<li>Introduction to JavaScript</li>
<li>What is Responsive Design</li>
<li>How to Build Interactive Forms Using HTML and CSS</li>
</ul>
<p>The above is the detailed content of Fundamentals of HTML and CSS. For more information, please follow other related articles on the PHP Chinese website!</p>
</div>
</div>
<div id="377j5v51b" class="wzconShengming_sp">
<div id="377j5v51b" class="bzsmdiv_sp">Statement of this Website</div>
<div>The content of this article is voluntarily contributed by netizens, and the copyright belongs to the original author. This site does not assume corresponding legal responsibility. If you find any content suspected of plagiarism or infringement, please contact admin@php.cn</div>
</div>
</div>
<ins class="adsbygoogle"
style="display:block"
data-ad-format="autorelaxed"
data-ad-client="ca-pub-5902227090019525"
data-ad-slot="2507867629"></ins>
<div id="377j5v51b" class="AI_ToolDetails_main4sR">
<ins class="adsbygoogle"
style="display:block"
data-ad-client="ca-pub-5902227090019525"
data-ad-slot="3653428331"
data-ad-format="auto"
data-full-width-responsive="true"></ins>
<!-- <div id="377j5v51b" class="phpgenera_Details_mainR4">
<div id="377j5v51b" class="phpmain1_4R_readrank">
<div id="377j5v51b" class="phpmain1_4R_readrank_top">
<img onerror="this.onerror=''; this.src='/static/imghw/default1.png'"
onerror="this.onerror=''; this.src='/static/imghw/default1.png'"
src="/static/imghw/hotarticle2.png" alt="" />
<h2>Hot Article</h2>
</div>
<div id="377j5v51b" class="phpgenera_Details_mainR4_bottom">
<div id="377j5v51b" class="phpgenera_Details_mainR4_bottoms">
<a href="http://miracleart.cn/faq/1796819578.html" title="How to fix KB5060533 fails to install in Windows 10?" class="phpgenera_Details_mainR4_bottom_title">How to fix KB5060533 fails to install in Windows 10?</a>
<div id="377j5v51b" class="phpgenera_Details_mainR4_bottoms_info">
<span>4 weeks ago</span>
<span>By DDD</span>
</div>
</div>
<div id="377j5v51b" class="phpgenera_Details_mainR4_bottoms">
<a href="http://miracleart.cn/faq/1796819730.html" title="Dune: Awakening - Where To Get Insulated Fabric" class="phpgenera_Details_mainR4_bottom_title">Dune: Awakening - Where To Get Insulated Fabric</a>
<div id="377j5v51b" class="phpgenera_Details_mainR4_bottoms_info">
<span>4 weeks ago</span>
<span>By Jack chen</span>
</div>
</div>
<div id="377j5v51b" class="phpgenera_Details_mainR4_bottoms">
<a href="http://miracleart.cn/faq/1796819994.html" title="How to fix KB5060999 fails to install in Windows 11?" class="phpgenera_Details_mainR4_bottom_title">How to fix KB5060999 fails to install in Windows 11?</a>
<div id="377j5v51b" class="phpgenera_Details_mainR4_bottoms_info">
<span>4 weeks ago</span>
<span>By DDD</span>
</div>
</div>
<div id="377j5v51b" class="phpgenera_Details_mainR4_bottoms">
<a href="http://miracleart.cn/faq/1796819536.html" title="Guild Guide In Tainted Grail: The Fall Of Avalon" class="phpgenera_Details_mainR4_bottom_title">Guild Guide In Tainted Grail: The Fall Of Avalon</a>
<div id="377j5v51b" class="phpgenera_Details_mainR4_bottoms_info">
<span>4 weeks ago</span>
<span>By Jack chen</span>
</div>
</div>
<div id="377j5v51b" class="phpgenera_Details_mainR4_bottoms">
<a href="http://miracleart.cn/faq/1796819405.html" title="Lies of P Lumacchio Boss Fight Guide (Overture DLC)" class="phpgenera_Details_mainR4_bottom_title">Lies of P Lumacchio Boss Fight Guide (Overture DLC)</a>
<div id="377j5v51b" class="phpgenera_Details_mainR4_bottoms_info">
<span>4 weeks ago</span>
<span>By Jack chen</span>
</div>
</div>
</div>
<div id="377j5v51b" class="phpgenera_Details_mainR3_more">
<a href="http://miracleart.cn/article.html">Show More</a>
</div>
</div>
</div> -->
<div id="377j5v51b" class="phpgenera_Details_mainR3">
<div id="377j5v51b" class="phpmain1_4R_readrank">
<div id="377j5v51b" class="phpmain1_4R_readrank_top">
<img onerror="this.onerror=''; this.src='/static/imghw/default1.png'"
onerror="this.onerror=''; this.src='/static/imghw/default1.png'"
src="/static/imghw/hottools2.png" alt="" />
<h2>Hot AI Tools</h2>
</div>
<div id="377j5v51b" class="phpgenera_Details_mainR3_bottom">
<div id="377j5v51b" class="phpmain_tab2_mids_top">
<a href="http://miracleart.cn/ai/undress-ai-tool" title="Undress AI Tool" class="phpmain_tab2_mids_top_img">
<img onerror="this.onerror=''; this.src='/static/imghw/default1.png'"
onerror="this.onerror=''; this.src='/static/imghw/default1.png'"
class="lazy" data-src="https://img.php.cn/upload/ai_manual/001/246/273/173410641626608.jpg?x-oss-process=image/resize,m_fill,h_50,w_50" src="/static/imghw/default1.png" alt="Undress AI Tool" />
</a>
<div id="377j5v51b" class="phpmain_tab2_mids_info">
<a href="http://miracleart.cn/ai/undress-ai-tool" title="Undress AI Tool" class="phpmain_tab2_mids_title">
<h3>Undress AI Tool</h3>
</a>
<p>Undress images for free</p>
</div>
</div>
<div id="377j5v51b" class="phpmain_tab2_mids_top">
<a href="http://miracleart.cn/ai/undresserai-undress" title="Undresser.AI Undress" class="phpmain_tab2_mids_top_img">
<img onerror="this.onerror=''; this.src='/static/imghw/default1.png'"
onerror="this.onerror=''; this.src='/static/imghw/default1.png'"
class="lazy" data-src="https://img.php.cn/upload/ai_manual/001/246/273/173411540686492.jpg?x-oss-process=image/resize,m_fill,h_50,w_50" src="/static/imghw/default1.png" alt="Undresser.AI Undress" />
</a>
<div id="377j5v51b" class="phpmain_tab2_mids_info">
<a href="http://miracleart.cn/ai/undresserai-undress" title="Undresser.AI Undress" class="phpmain_tab2_mids_title">
<h3>Undresser.AI Undress</h3>
</a>
<p>AI-powered app for creating realistic nude photos</p>
</div>
</div>
<div id="377j5v51b" class="phpmain_tab2_mids_top">
<a href="http://miracleart.cn/ai/ai-clothes-remover" title="AI Clothes Remover" class="phpmain_tab2_mids_top_img">
<img onerror="this.onerror=''; this.src='/static/imghw/default1.png'"
onerror="this.onerror=''; this.src='/static/imghw/default1.png'"
class="lazy" data-src="https://img.php.cn/upload/ai_manual/001/246/273/173411552797167.jpg?x-oss-process=image/resize,m_fill,h_50,w_50" src="/static/imghw/default1.png" alt="AI Clothes Remover" />
</a>
<div id="377j5v51b" class="phpmain_tab2_mids_info">
<a href="http://miracleart.cn/ai/ai-clothes-remover" title="AI Clothes Remover" class="phpmain_tab2_mids_title">
<h3>AI Clothes Remover</h3>
</a>
<p>Online AI tool for removing clothes from photos.</p>
</div>
</div>
<div id="377j5v51b" class="phpmain_tab2_mids_top">
<a href="http://miracleart.cn/ai/clothoffio" title="Clothoff.io" class="phpmain_tab2_mids_top_img">
<img onerror="this.onerror=''; this.src='/static/imghw/default1.png'"
onerror="this.onerror=''; this.src='/static/imghw/default1.png'"
class="lazy" data-src="https://img.php.cn/upload/ai_manual/001/246/273/173411529149311.jpg?x-oss-process=image/resize,m_fill,h_50,w_50" src="/static/imghw/default1.png" alt="Clothoff.io" />
</a>
<div id="377j5v51b" class="phpmain_tab2_mids_info">
<a href="http://miracleart.cn/ai/clothoffio" title="Clothoff.io" class="phpmain_tab2_mids_title">
<h3>Clothoff.io</h3>
</a>
<p>AI clothes remover</p>
</div>
</div>
<div id="377j5v51b" class="phpmain_tab2_mids_top">
<a href="http://miracleart.cn/ai/video-swap" title="Video Face Swap" class="phpmain_tab2_mids_top_img">
<img onerror="this.onerror=''; this.src='/static/imghw/default1.png'"
onerror="this.onerror=''; this.src='/static/imghw/default1.png'"
class="lazy" data-src="https://img.php.cn/upload/ai_manual/001/246/273/173414504068133.jpg?x-oss-process=image/resize,m_fill,h_50,w_50" src="/static/imghw/default1.png" alt="Video Face Swap" />
</a>
<div id="377j5v51b" class="phpmain_tab2_mids_info">
<a href="http://miracleart.cn/ai/video-swap" title="Video Face Swap" class="phpmain_tab2_mids_title">
<h3>Video Face Swap</h3>
</a>
<p>Swap faces in any video effortlessly with our completely free AI face swap tool!</p>
</div>
</div>
</div>
<div id="377j5v51b" class="phpgenera_Details_mainR3_more">
<a href="http://miracleart.cn/ai">Show More</a>
</div>
</div>
</div>
<div id="377j5v51b" class="phpgenera_Details_mainR4">
<div id="377j5v51b" class="phpmain1_4R_readrank">
<div id="377j5v51b" class="phpmain1_4R_readrank_top">
<img onerror="this.onerror=''; this.src='/static/imghw/default1.png'"
onerror="this.onerror=''; this.src='/static/imghw/default1.png'"
src="/static/imghw/hotarticle2.png" alt="" />
<h2>Hot Article</h2>
</div>
<div id="377j5v51b" class="phpgenera_Details_mainR4_bottom">
<div id="377j5v51b" class="phpgenera_Details_mainR4_bottoms">
<a href="http://miracleart.cn/faq/1796819578.html" title="How to fix KB5060533 fails to install in Windows 10?" class="phpgenera_Details_mainR4_bottom_title">How to fix KB5060533 fails to install in Windows 10?</a>
<div id="377j5v51b" class="phpgenera_Details_mainR4_bottoms_info">
<span>4 weeks ago</span>
<span>By DDD</span>
</div>
</div>
<div id="377j5v51b" class="phpgenera_Details_mainR4_bottoms">
<a href="http://miracleart.cn/faq/1796819730.html" title="Dune: Awakening - Where To Get Insulated Fabric" class="phpgenera_Details_mainR4_bottom_title">Dune: Awakening - Where To Get Insulated Fabric</a>
<div id="377j5v51b" class="phpgenera_Details_mainR4_bottoms_info">
<span>4 weeks ago</span>
<span>By Jack chen</span>
</div>
</div>
<div id="377j5v51b" class="phpgenera_Details_mainR4_bottoms">
<a href="http://miracleart.cn/faq/1796819994.html" title="How to fix KB5060999 fails to install in Windows 11?" class="phpgenera_Details_mainR4_bottom_title">How to fix KB5060999 fails to install in Windows 11?</a>
<div id="377j5v51b" class="phpgenera_Details_mainR4_bottoms_info">
<span>4 weeks ago</span>
<span>By DDD</span>
</div>
</div>
<div id="377j5v51b" class="phpgenera_Details_mainR4_bottoms">
<a href="http://miracleart.cn/faq/1796819536.html" title="Guild Guide In Tainted Grail: The Fall Of Avalon" class="phpgenera_Details_mainR4_bottom_title">Guild Guide In Tainted Grail: The Fall Of Avalon</a>
<div id="377j5v51b" class="phpgenera_Details_mainR4_bottoms_info">
<span>4 weeks ago</span>
<span>By Jack chen</span>
</div>
</div>
<div id="377j5v51b" class="phpgenera_Details_mainR4_bottoms">
<a href="http://miracleart.cn/faq/1796819405.html" title="Lies of P Lumacchio Boss Fight Guide (Overture DLC)" class="phpgenera_Details_mainR4_bottom_title">Lies of P Lumacchio Boss Fight Guide (Overture DLC)</a>
<div id="377j5v51b" class="phpgenera_Details_mainR4_bottoms_info">
<span>4 weeks ago</span>
<span>By Jack chen</span>
</div>
</div>
</div>
<div id="377j5v51b" class="phpgenera_Details_mainR3_more">
<a href="http://miracleart.cn/article.html">Show More</a>
</div>
</div>
</div>
<div id="377j5v51b" class="phpgenera_Details_mainR3">
<div id="377j5v51b" class="phpmain1_4R_readrank">
<div id="377j5v51b" class="phpmain1_4R_readrank_top">
<img onerror="this.onerror=''; this.src='/static/imghw/default1.png'"
onerror="this.onerror=''; this.src='/static/imghw/default1.png'"
src="/static/imghw/hottools2.png" alt="" />
<h2>Hot Tools</h2>
</div>
<div id="377j5v51b" class="phpgenera_Details_mainR3_bottom">
<div id="377j5v51b" class="phpmain_tab2_mids_top">
<a href="http://miracleart.cn/toolset/development-tools/92" title="Notepad++7.3.1" class="phpmain_tab2_mids_top_img">
<img onerror="this.onerror=''; this.src='/static/imghw/default1.png'"
onerror="this.onerror=''; this.src='/static/imghw/default1.png'"
class="lazy" data-src="https://img.php.cn/upload/manual/000/000/001/58ab96f0f39f7357.jpg?x-oss-process=image/resize,m_fill,h_50,w_72" src="/static/imghw/default1.png" alt="Notepad++7.3.1" />
</a>
<div id="377j5v51b" class="phpmain_tab2_mids_info">
<a href="http://miracleart.cn/toolset/development-tools/92" title="Notepad++7.3.1" class="phpmain_tab2_mids_title">
<h3>Notepad++7.3.1</h3>
</a>
<p>Easy-to-use and free code editor</p>
</div>
</div>
<div id="377j5v51b" class="phpmain_tab2_mids_top">
<a href="http://miracleart.cn/toolset/development-tools/93" title="SublimeText3 Chinese version" class="phpmain_tab2_mids_top_img">
<img onerror="this.onerror=''; this.src='/static/imghw/default1.png'"
onerror="this.onerror=''; this.src='/static/imghw/default1.png'"
class="lazy" data-src="https://img.php.cn/upload/manual/000/000/001/58ab97a3baad9677.jpg?x-oss-process=image/resize,m_fill,h_50,w_72" src="/static/imghw/default1.png" alt="SublimeText3 Chinese version" />
</a>
<div id="377j5v51b" class="phpmain_tab2_mids_info">
<a href="http://miracleart.cn/toolset/development-tools/93" title="SublimeText3 Chinese version" class="phpmain_tab2_mids_title">
<h3>SublimeText3 Chinese version</h3>
</a>
<p>Chinese version, very easy to use</p>
</div>
</div>
<div id="377j5v51b" class="phpmain_tab2_mids_top">
<a href="http://miracleart.cn/toolset/development-tools/121" title="Zend Studio 13.0.1" class="phpmain_tab2_mids_top_img">
<img onerror="this.onerror=''; this.src='/static/imghw/default1.png'"
onerror="this.onerror=''; this.src='/static/imghw/default1.png'"
class="lazy" data-src="https://img.php.cn/upload/manual/000/000/001/58ab97ecd1ab2670.jpg?x-oss-process=image/resize,m_fill,h_50,w_72" src="/static/imghw/default1.png" alt="Zend Studio 13.0.1" />
</a>
<div id="377j5v51b" class="phpmain_tab2_mids_info">
<a href="http://miracleart.cn/toolset/development-tools/121" title="Zend Studio 13.0.1" class="phpmain_tab2_mids_title">
<h3>Zend Studio 13.0.1</h3>
</a>
<p>Powerful PHP integrated development environment</p>
</div>
</div>
<div id="377j5v51b" class="phpmain_tab2_mids_top">
<a href="http://miracleart.cn/toolset/development-tools/469" title="Dreamweaver CS6" class="phpmain_tab2_mids_top_img">
<img onerror="this.onerror=''; this.src='/static/imghw/default1.png'"
onerror="this.onerror=''; this.src='/static/imghw/default1.png'"
class="lazy" data-src="https://img.php.cn/upload/manual/000/000/001/58d0e0fc74683535.jpg?x-oss-process=image/resize,m_fill,h_50,w_72" src="/static/imghw/default1.png" alt="Dreamweaver CS6" />
</a>
<div id="377j5v51b" class="phpmain_tab2_mids_info">
<a href="http://miracleart.cn/toolset/development-tools/469" title="Dreamweaver CS6" class="phpmain_tab2_mids_title">
<h3>Dreamweaver CS6</h3>
</a>
<p>Visual web development tools</p>
</div>
</div>
<div id="377j5v51b" class="phpmain_tab2_mids_top">
<a href="http://miracleart.cn/toolset/development-tools/500" title="SublimeText3 Mac version" class="phpmain_tab2_mids_top_img">
<img onerror="this.onerror=''; this.src='/static/imghw/default1.png'"
onerror="this.onerror=''; this.src='/static/imghw/default1.png'"
class="lazy" data-src="https://img.php.cn/upload/manual/000/000/001/58d34035e2757995.png?x-oss-process=image/resize,m_fill,h_50,w_72" src="/static/imghw/default1.png" alt="SublimeText3 Mac version" />
</a>
<div id="377j5v51b" class="phpmain_tab2_mids_info">
<a href="http://miracleart.cn/toolset/development-tools/500" title="SublimeText3 Mac version" class="phpmain_tab2_mids_title">
<h3>SublimeText3 Mac version</h3>
</a>
<p>God-level code editing software (SublimeText3)</p>
</div>
</div>
</div>
<div id="377j5v51b" class="phpgenera_Details_mainR3_more">
<a href="http://miracleart.cn/ai">Show More</a>
</div>
</div>
</div>
<div id="377j5v51b" class="phpgenera_Details_mainR4">
<div id="377j5v51b" class="phpmain1_4R_readrank">
<div id="377j5v51b" class="phpmain1_4R_readrank_top">
<img onerror="this.onerror=''; this.src='/static/imghw/default1.png'"
onerror="this.onerror=''; this.src='/static/imghw/default1.png'"
src="/static/imghw/hotarticle2.png" alt="" />
<h2>Hot Topics</h2>
</div>
<div id="377j5v51b" class="phpgenera_Details_mainR4_bottom">
<div id="377j5v51b" class="phpgenera_Details_mainR4_bottoms">
<a href="http://miracleart.cn/faq/gmailyxdlrkzn" title="Where is the login entrance for gmail email?" class="phpgenera_Details_mainR4_bottom_title">Where is the login entrance for gmail email?</a>
<div id="377j5v51b" class="phpgenera_Details_mainR4_bottoms_info">
<div id="377j5v51b" class="phpgenera_Details_mainR4_bottoms_infos">
<img src="/static/imghw/eyess.png" alt="" />
<span>8519</span>
</div>
<div id="377j5v51b" class="phpgenera_Details_mainR4_bottoms_infos">
<img src="/static/imghw/tiezi.png" alt="" />
<span>17</span>
</div>
</div>
</div>
<div id="377j5v51b" class="phpgenera_Details_mainR4_bottoms">
<a href="http://miracleart.cn/faq/java-tutorial" title="Java Tutorial" class="phpgenera_Details_mainR4_bottom_title">Java Tutorial</a>
<div id="377j5v51b" class="phpgenera_Details_mainR4_bottoms_info">
<div id="377j5v51b" class="phpgenera_Details_mainR4_bottoms_infos">
<img src="/static/imghw/eyess.png" alt="" />
<span>1744</span>
</div>
<div id="377j5v51b" class="phpgenera_Details_mainR4_bottoms_infos">
<img src="/static/imghw/tiezi.png" alt="" />
<span>16</span>
</div>
</div>
</div>
<div id="377j5v51b" class="phpgenera_Details_mainR4_bottoms">
<a href="http://miracleart.cn/faq/cakephp-tutor" title="CakePHP Tutorial" class="phpgenera_Details_mainR4_bottom_title">CakePHP Tutorial</a>
<div id="377j5v51b" class="phpgenera_Details_mainR4_bottoms_info">
<div id="377j5v51b" class="phpgenera_Details_mainR4_bottoms_infos">
<img src="/static/imghw/eyess.png" alt="" />
<span>1599</span>
</div>
<div id="377j5v51b" class="phpgenera_Details_mainR4_bottoms_infos">
<img src="/static/imghw/tiezi.png" alt="" />
<span>56</span>
</div>
</div>
</div>
<div id="377j5v51b" class="phpgenera_Details_mainR4_bottoms">
<a href="http://miracleart.cn/faq/laravel-tutori" title="Laravel Tutorial" class="phpgenera_Details_mainR4_bottom_title">Laravel Tutorial</a>
<div id="377j5v51b" class="phpgenera_Details_mainR4_bottoms_info">
<div id="377j5v51b" class="phpgenera_Details_mainR4_bottoms_infos">
<img src="/static/imghw/eyess.png" alt="" />
<span>1539</span>
</div>
<div id="377j5v51b" class="phpgenera_Details_mainR4_bottoms_infos">
<img src="/static/imghw/tiezi.png" alt="" />
<span>28</span>
</div>
</div>
</div>
<div id="377j5v51b" class="phpgenera_Details_mainR4_bottoms">
<a href="http://miracleart.cn/faq/php-tutorial" title="PHP Tutorial" class="phpgenera_Details_mainR4_bottom_title">PHP Tutorial</a>
<div id="377j5v51b" class="phpgenera_Details_mainR4_bottoms_info">
<div id="377j5v51b" class="phpgenera_Details_mainR4_bottoms_infos">
<img src="/static/imghw/eyess.png" alt="" />
<span>1397</span>
</div>
<div id="377j5v51b" class="phpgenera_Details_mainR4_bottoms_infos">
<img src="/static/imghw/tiezi.png" alt="" />
<span>31</span>
</div>
</div>
</div>
</div>
<div id="377j5v51b" class="phpgenera_Details_mainR3_more">
<a href="http://miracleart.cn/faq/zt">Show More</a>
</div>
</div>
</div>
</div>
</div>
<div id="377j5v51b" class="Article_Details_main2">
<div id="377j5v51b" class="phpgenera_Details_mainL4">
<div id="377j5v51b" class="phpmain1_2_top">
<a href="javascript:void(0);" class="phpmain1_2_top_title">Related knowledge<img
src="/static/imghw/index2_title2.png" alt="" /></a>
</div>
<div id="377j5v51b" class="phpgenera_Details_mainL4_info">
<div id="377j5v51b" class="phphistorical_Version2_mids">
<a href="http://miracleart.cn/faq/1796819239.html" title="How can I include CSS only on some pages?" class="phphistorical_Version2_mids_img">
<img onerror="this.onerror=''; this.src='/static/imghw/default1.png'"
src="/static/imghw/default1.png" class="lazy" data-src="https://img.php.cn/upload/article/001/253/068/174957130281670.jpg?x-oss-process=image/resize,m_fill,h_207,w_330" alt="How can I include CSS only on some pages?" />
</a>
<a href="http://miracleart.cn/faq/1796819239.html" title="How can I include CSS only on some pages?" class="phphistorical_Version2_mids_title">How can I include CSS only on some pages?</a>
<span id="377j5v51b" class="Articlelist_txts_time">Jun 11, 2025 am 12:01 AM</span>
<p class="Articlelist_txts_p">There are three ways to selectively include CSS on a specific page: 1. Inline CSS, suitable for pages that are not frequently accessed or require unique styles; 2. Load external CSS files using JavaScript conditions, suitable for situations where flexibility is required; 3. Containment on the server side, suitable for scenarios using server-side languages. This approach can optimize website performance and maintainability, but requires balance of modularity and performance.</p>
</div>
<div id="377j5v51b" class="phphistorical_Version2_mids">
<a href="http://miracleart.cn/faq/1796823628.html" title="What is 'render-blocking CSS'?" class="phphistorical_Version2_mids_img">
<img onerror="this.onerror=''; this.src='/static/imghw/default1.png'"
src="/static/imghw/default1.png" class="lazy" data-src="https://img.php.cn/upload/article/001/253/068/175069693197174.jpg?x-oss-process=image/resize,m_fill,h_207,w_330" alt="What is 'render-blocking CSS'?" />
</a>
<a href="http://miracleart.cn/faq/1796823628.html" title="What is 'render-blocking CSS'?" class="phphistorical_Version2_mids_title">What is 'render-blocking CSS'?</a>
<span id="377j5v51b" class="Articlelist_txts_time">Jun 24, 2025 am 12:42 AM</span>
<p class="Articlelist_txts_p">CSS blocks page rendering because browsers view inline and external CSS as key resources by default, especially with imported stylesheets, header large amounts of inline CSS, and unoptimized media query styles. 1. Extract critical CSS and embed it into HTML; 2. Delay loading non-critical CSS through JavaScript; 3. Use media attributes to optimize loading such as print styles; 4. Compress and merge CSS to reduce requests. It is recommended to use tools to extract key CSS, combine rel="preload" asynchronous loading, and use media delayed loading reasonably to avoid excessive splitting and complex script control.</p>
</div>
<div id="377j5v51b" class="phphistorical_Version2_mids">
<a href="http://miracleart.cn/faq/1796820543.html" title="How to use Lotties in Figma" class="phphistorical_Version2_mids_img">
<img onerror="this.onerror=''; this.src='/static/imghw/default1.png'"
src="/static/imghw/default1.png" class="lazy" data-src="https://img.php.cn/upload/article/001/242/473/174986743677204.jpg?x-oss-process=image/resize,m_fill,h_207,w_330" alt="How to use Lotties in Figma" />
</a>
<a href="http://miracleart.cn/faq/1796820543.html" title="How to use Lotties in Figma" class="phphistorical_Version2_mids_title">How to use Lotties in Figma</a>
<span id="377j5v51b" class="Articlelist_txts_time">Jun 14, 2025 am 10:17 AM</span>
<p class="Articlelist_txts_p">In the following tutorial, I will show you how to create Lottie animations in Figma. We'll use two colorful designs to exmplify how you can animate in Figma, and then I'll show you how to go from Figma to Lottie animations. All you need is a free Fig</p>
</div>
<div id="377j5v51b" class="phphistorical_Version2_mids">
<a href="http://miracleart.cn/faq/1796820287.html" title="Breaking Boundaries: Building a Tangram Puzzle With (S)CSS" class="phphistorical_Version2_mids_img">
<img onerror="this.onerror=''; this.src='/static/imghw/default1.png'"
src="/static/imghw/default1.png" class="lazy" data-src="https://img.php.cn/upload/article/001/242/473/174978559468682.jpg?x-oss-process=image/resize,m_fill,h_207,w_330" alt="Breaking Boundaries: Building a Tangram Puzzle With (S)CSS" />
</a>
<a href="http://miracleart.cn/faq/1796820287.html" title="Breaking Boundaries: Building a Tangram Puzzle With (S)CSS" class="phphistorical_Version2_mids_title">Breaking Boundaries: Building a Tangram Puzzle With (S)CSS</a>
<span id="377j5v51b" class="Articlelist_txts_time">Jun 13, 2025 am 11:33 AM</span>
<p class="Articlelist_txts_p">We put it to the test and it turns out Sass can replace JavaScript, at least when it comes to low-level logic and puzzle behavior. With nothing but maps, mixins, functions, and a whole lot of math, we managed to bring our Tangram puzzle to life, no J</p>
</div>
<div id="377j5v51b" class="phphistorical_Version2_mids">
<a href="http://miracleart.cn/faq/1796822133.html" title="External vs. Internal CSS: What's the Best Approach?" class="phphistorical_Version2_mids_img">
<img onerror="this.onerror=''; this.src='/static/imghw/default1.png'"
src="/static/imghw/default1.png" class="lazy" data-src="https://img.php.cn/upload/article/001/253/068/175035152168797.jpg?x-oss-process=image/resize,m_fill,h_207,w_330" alt="External vs. Internal CSS: What's the Best Approach?" />
</a>
<a href="http://miracleart.cn/faq/1796822133.html" title="External vs. Internal CSS: What's the Best Approach?" class="phphistorical_Version2_mids_title">External vs. Internal CSS: What's the Best Approach?</a>
<span id="377j5v51b" class="Articlelist_txts_time">Jun 20, 2025 am 12:45 AM</span>
<p class="Articlelist_txts_p">ThebestapproachforCSSdependsontheproject'sspecificneeds.Forlargerprojects,externalCSSisbetterduetomaintainabilityandreusability;forsmallerprojectsorsingle-pageapplications,internalCSSmightbemoresuitable.It'scrucialtobalanceprojectsize,performanceneed</p>
</div>
<div id="377j5v51b" class="phphistorical_Version2_mids">
<a href="http://miracleart.cn/faq/1796821588.html" title="Does my CSS must be on lower case?" class="phphistorical_Version2_mids_img">
<img onerror="this.onerror=''; this.src='/static/imghw/default1.png'"
src="/static/imghw/default1.png" class="lazy" data-src="https://img.php.cn/upload/article/001/253/068/175026415047262.jpg?x-oss-process=image/resize,m_fill,h_207,w_330" alt="Does my CSS must be on lower case?" />
</a>
<a href="http://miracleart.cn/faq/1796821588.html" title="Does my CSS must be on lower case?" class="phphistorical_Version2_mids_title">Does my CSS must be on lower case?</a>
<span id="377j5v51b" class="Articlelist_txts_time">Jun 19, 2025 am 12:29 AM</span>
<p class="Articlelist_txts_p">No,CSSdoesnothavetobeinlowercase.However,usinglowercaseisrecommendedfor:1)Consistencyandreadability,2)Avoidingerrorsinrelatedtechnologies,3)Potentialperformancebenefits,and4)Improvedcollaborationwithinteams.</p>
</div>
<div id="377j5v51b" class="phphistorical_Version2_mids">
<a href="http://miracleart.cn/faq/1796819647.html" title="CSS Counters: A Step-by-Step Tutorial with Examples" class="phphistorical_Version2_mids_img">
<img onerror="this.onerror=''; this.src='/static/imghw/default1.png'"
src="/static/imghw/default1.png" class="lazy" data-src="https://img.php.cn/upload/article/001/253/068/174969551188956.jpg?x-oss-process=image/resize,m_fill,h_207,w_330" alt="CSS Counters: A Step-by-Step Tutorial with Examples" />
</a>
<a href="http://miracleart.cn/faq/1796819647.html" title="CSS Counters: A Step-by-Step Tutorial with Examples" class="phphistorical_Version2_mids_title">CSS Counters: A Step-by-Step Tutorial with Examples</a>
<span id="377j5v51b" class="Articlelist_txts_time">Jun 12, 2025 am 10:31 AM</span>
<p class="Articlelist_txts_p">CSSCounters is a tool for creating automatic numbers. 1. Basic usage: define and operate counters through counter-reset and counter-increment, such as "SectionX." before h2. 2. Advanced usage: Use nested counters to create complex numbers, such as chapter and section numbers. 3. Notes: Ensure the counter is reset correctly, optimize performance, and simplify counter logic. 4. Best practice: clear naming, define counters in CSS, and use counter-increment and counter-reset reasonably.</p>
</div>
<div id="377j5v51b" class="phphistorical_Version2_mids">
<a href="http://miracleart.cn/faq/1796821998.html" title="CSS Case Sensitivity: Understanding What Matters" class="phphistorical_Version2_mids_img">
<img onerror="this.onerror=''; this.src='/static/imghw/default1.png'"
src="/static/imghw/default1.png" class="lazy" data-src="https://img.php.cn/upload/article/001/253/068/175034936181156.jpg?x-oss-process=image/resize,m_fill,h_207,w_330" alt="CSS Case Sensitivity: Understanding What Matters" />
</a>
<a href="http://miracleart.cn/faq/1796821998.html" title="CSS Case Sensitivity: Understanding What Matters" class="phphistorical_Version2_mids_title">CSS Case Sensitivity: Understanding What Matters</a>
<span id="377j5v51b" class="Articlelist_txts_time">Jun 20, 2025 am 12:09 AM</span>
<p class="Articlelist_txts_p">CSSismostlycase-insensitive,butURLsandfontfamilynamesarecase-sensitive.1)Propertiesandvalueslikecolor:red;arenotcase-sensitive.2)URLsmustmatchtheserver'scase,e.g.,/images/Logo.png.3)Fontfamilynameslike'OpenSans'mustbeexact.</p>
</div>
</div>
<a href="http://miracleart.cn/web-designer.html" class="phpgenera_Details_mainL4_botton">
<span>See all articles</span>
<img src="/static/imghw/down_right.png" alt="" />
</a>
</div>
</div>
</div>
</main>
<footer>
<div id="377j5v51b" class="footer">
<div id="377j5v51b" class="footertop">
<img src="/static/imghw/logo.png" alt="">
<p>Public welfare online PHP training，Help PHP learners grow quickly！</p>
</div>
<div id="377j5v51b" class="footermid">
<a href="http://miracleart.cn/about/us.html">About us</a>
<a href="http://miracleart.cn/about/disclaimer.html">Disclaimer</a>
<a href="http://miracleart.cn/update/article_0_1.html">Sitemap</a>
</div>
<div id="377j5v51b" class="footerbottom">
<p>
? php.cn All rights reserved
</p>
</div>
</div>
</footer>
<input type="hidden" id="verifycode" value="/captcha.html">
<link rel='stylesheet' id='_main-css' href='/static/css/viewer.min.css?2' type='text/css' media='all' />
<footer>
<div class="friendship-link">
<p>感谢您访问我们的网站，您可能还对以下资源感兴趣：</p>
<a href="http://miracleart.cn/" title="国产av日韩一区二区三区精品">国产av日韩一区二区三区精品</a>
<div class="friend-links">
</div>
</div>
</footer>
<script>
(function(){
var bp = document.createElement('script');
var curProtocol = window.location.protocol.split(':')[0];
if (curProtocol === 'https') {
bp.src = 'https://zz.bdstatic.com/linksubmit/push.js';
}
else {
bp.src = 'http://push.zhanzhang.baidu.com/push.js';
}
var s = document.getElementsByTagName("script")[0];
s.parentNode.insertBefore(bp, s);
})();
</script>
</body><div id="4qahh" class="pl_css_ganrao" style="display: none;"><pre id="4qahh"><var id="4qahh"><center id="4qahh"><tr id="4qahh"></tr></center></var></pre><del id="4qahh"><bdo id="4qahh"><mark id="4qahh"><strong id="4qahh"></strong></mark></bdo></del><center id="4qahh"><tr id="4qahh"><meter id="4qahh"></meter></tr></center><small id="4qahh"></small><strike id="4qahh"><button id="4qahh"><form id="4qahh"></form></button></strike><noframes id="4qahh"></noframes><div id="4qahh"></div><small id="4qahh"><progress id="4qahh"><small id="4qahh"></small></progress></small><strong id="4qahh"></strong><pre id="4qahh"><b id="4qahh"></b></pre><fieldset id="4qahh"></fieldset><code id="4qahh"><tr id="4qahh"><cite id="4qahh"></cite></tr></code><ul id="4qahh"><strike id="4qahh"><ins id="4qahh"></ins></strike></ul><cite id="4qahh"></cite><legend id="4qahh"><li id="4qahh"><dl id="4qahh"><button id="4qahh"></button></dl></li></legend><rp id="4qahh"></rp><pre id="4qahh"></pre><optgroup id="4qahh"><td id="4qahh"><optgroup id="4qahh"></optgroup></td></optgroup><abbr id="4qahh"><fieldset id="4qahh"><option id="4qahh"></option></fieldset></abbr><dfn id="4qahh"><span id="4qahh"></span></dfn><wbr id="4qahh"></wbr><rt id="4qahh"></rt><ruby id="4qahh"></ruby><button id="4qahh"><dl id="4qahh"><button id="4qahh"></button></dl></button><ol id="4qahh"></ol><big id="4qahh"><tbody id="4qahh"><dfn id="4qahh"><abbr id="4qahh"></abbr></dfn></tbody></big><abbr id="4qahh"></abbr><kbd id="4qahh"><p id="4qahh"><kbd id="4qahh"><th id="4qahh"></th></kbd></p></kbd><fieldset id="4qahh"><rp id="4qahh"></rp></fieldset><tbody id="4qahh"></tbody><bdo id="4qahh"></bdo><nav id="4qahh"><center id="4qahh"><nav id="4qahh"></nav></center></nav><wbr id="4qahh"></wbr><dfn id="4qahh"></dfn><optgroup id="4qahh"></optgroup><code id="4qahh"></code><menu id="4qahh"><font id="4qahh"></font></menu><rt id="4qahh"><delect id="4qahh"><small id="4qahh"></small></delect></rt><code id="4qahh"></code><p id="4qahh"></p><strong id="4qahh"></strong><blockquote id="4qahh"><pre id="4qahh"><blockquote id="4qahh"></blockquote></pre></blockquote><rt id="4qahh"><small id="4qahh"><rt id="4qahh"></rt></small></rt><blockquote id="4qahh"><code id="4qahh"><ins id="4qahh"></ins></code></blockquote><noframes id="4qahh"></noframes><pre id="4qahh"></pre><small id="4qahh"></small><progress id="4qahh"><track id="4qahh"><tfoot id="4qahh"><noframes id="4qahh"></noframes></tfoot></track></progress><delect id="4qahh"><style id="4qahh"><delect id="4qahh"></delect></style></delect><em id="4qahh"></em><wbr id="4qahh"></wbr><u id="4qahh"></u><tr id="4qahh"><nobr id="4qahh"><tr id="4qahh"><nav id="4qahh"></nav></tr></nobr></tr><div id="4qahh"></div><rt id="4qahh"><delect id="4qahh"><rt id="4qahh"></rt></delect></rt><tfoot id="4qahh"><nobr id="4qahh"><acronym id="4qahh"></acronym></nobr></tfoot><output id="4qahh"></output><optgroup id="4qahh"><td id="4qahh"></td></optgroup><option id="4qahh"></option><u id="4qahh"></u><samp id="4qahh"><tbody id="4qahh"><big id="4qahh"><tbody id="4qahh"></tbody></big></tbody></samp><ul id="4qahh"></ul><sup id="4qahh"></sup><dfn id="4qahh"></dfn><output id="4qahh"></output><menu id="4qahh"></menu><kbd id="4qahh"><th id="4qahh"><rp id="4qahh"></rp></th></kbd><small id="4qahh"><tfoot id="4qahh"><noframes id="4qahh"></noframes></tfoot></small><b id="4qahh"></b><tr id="4qahh"><table id="4qahh"><wbr id="4qahh"><u id="4qahh"></u></wbr></table></tr><span id="4qahh"></span><rt id="4qahh"></rt><delect id="4qahh"><small id="4qahh"><ins id="4qahh"></ins></small></delect><menu id="4qahh"></menu><address id="4qahh"></address><p id="4qahh"><kbd id="4qahh"><th id="4qahh"><rp id="4qahh"></rp></th></kbd></p><button id="4qahh"></button><dfn id="4qahh"><listing id="4qahh"></listing></dfn><strike id="4qahh"><button id="4qahh"><form id="4qahh"></form></button></strike><rt id="4qahh"></rt><ruby id="4qahh"><dl id="4qahh"><button id="4qahh"><dl id="4qahh"></dl></button></dl></ruby><object id="4qahh"></object><table id="4qahh"><address id="4qahh"><u id="4qahh"><xmp id="4qahh"></xmp></u></address></table><abbr id="4qahh"></abbr><li id="4qahh"><legend id="4qahh"></legend></li><del id="4qahh"></del><pre id="4qahh"></pre><nobr id="4qahh"><tr id="4qahh"><noframes id="4qahh"><center id="4qahh"></center></noframes></tr></nobr><table id="4qahh"><wbr id="4qahh"><li id="4qahh"></li></wbr></table><table id="4qahh"></table><style id="4qahh"></style><source id="4qahh"></source><wbr id="4qahh"><li id="4qahh"><dl id="4qahh"></dl></li></wbr><option id="4qahh"></option><noframes id="4qahh"></noframes><menu id="4qahh"></menu><video id="4qahh"></video><var id="4qahh"><center id="4qahh"><object id="4qahh"><tt id="4qahh"></tt></object></center></var><em id="4qahh"></em><noframes id="4qahh"></noframes><dd id="4qahh"><strong id="4qahh"><thead id="4qahh"><abbr id="4qahh"></abbr></thead></strong></dd><s id="4qahh"></s><samp id="4qahh"></samp><pre id="4qahh"></pre><table id="4qahh"><address id="4qahh"></address></table><kbd id="4qahh"><p id="4qahh"></p></kbd><samp id="4qahh"><tbody id="4qahh"><del id="4qahh"></del></tbody></samp><xmp id="4qahh"></xmp><meter id="4qahh"></meter><legend id="4qahh"></legend><pre id="4qahh"></pre><video id="4qahh"></video><track id="4qahh"></track><dd id="4qahh"><strong id="4qahh"><div id="4qahh"></div></strong></dd><sup id="4qahh"><input id="4qahh"><xmp id="4qahh"></xmp></input></sup><pre id="4qahh"><em id="4qahh"><s id="4qahh"></s></em></pre><input id="4qahh"><em id="4qahh"><label id="4qahh"></label></em></input><wbr id="4qahh"></wbr><sup id="4qahh"></sup><big id="4qahh"></big><abbr id="4qahh"></abbr><thead id="4qahh"></thead><p id="4qahh"></p><optgroup id="4qahh"></optgroup><output id="4qahh"></output><kbd id="4qahh"></kbd><thead id="4qahh"><input id="4qahh"><del id="4qahh"><i id="4qahh"></i></del></input></thead><ul id="4qahh"><dl id="4qahh"><ruby id="4qahh"></ruby></dl></ul><em id="4qahh"><label id="4qahh"></label></em><em id="4qahh"><td id="4qahh"><form id="4qahh"></form></td></em><legend id="4qahh"><li id="4qahh"><tbody id="4qahh"></tbody></li></legend><ol id="4qahh"><font id="4qahh"><menu id="4qahh"></menu></font></ol><u id="4qahh"><legend id="4qahh"><ul id="4qahh"><big id="4qahh"></big></ul></legend></u><sup id="4qahh"></sup><rt id="4qahh"><small id="4qahh"><style id="4qahh"></style></small></rt><td id="4qahh"><kbd id="4qahh"><p id="4qahh"></p></kbd></td><wbr id="4qahh"></wbr><abbr id="4qahh"><tfoot id="4qahh"></tfoot></abbr><track id="4qahh"><pre id="4qahh"><noframes id="4qahh"><sup id="4qahh"></sup></noframes></pre></track><dd id="4qahh"><abbr id="4qahh"><tfoot id="4qahh"></tfoot></abbr></dd><li id="4qahh"></li><dd id="4qahh"></dd><big id="4qahh"></big><form id="4qahh"></form><nobr id="4qahh"></nobr><s id="4qahh"></s><tfoot id="4qahh"><pre id="4qahh"><rt id="4qahh"></rt></pre></tfoot><ruby id="4qahh"><dl id="4qahh"><sup id="4qahh"></sup></dl></ruby><strong id="4qahh"><address id="4qahh"></address></strong><optgroup id="4qahh"><td id="4qahh"><form id="4qahh"></form></td></optgroup></div>
</html>
![\"Fundamentals](\"https:\/\/img.php.cn\/upload\/article\/000\/000\/000\/173617271945701.jpg\")
<\/p>\n\n![\"Fundamentals](\"https:\/\/img.php.cn\/upload\/article\/000\/000\/000\/173617272021543.jpg\")
<\/p>\n\n