国产av日韩一区二区三区精品,成人性爱视频在线观看,国产,欧美,日韩,一区,www.成色av久久成人,2222eeee成人天堂

current location：Home > Technical Articles > Daily Programming > CSS Knowledge

  • Simple CSS animation tutorial for beginners
    Simple CSS animation tutorial for beginners
    The key to CSS animation is to master the use of @keyframes and animation attributes. 1. @keyframes is used to define animation keyframes, and set the state of different stages of the animation through from/to or percentage; 2. The animation attribute applies animation to elements, including settings such as name, duration, easing function, delay and number of playbacks; 3. The code can be simplified by abbreviated attributes, and the effect of staggered playback of multiple elements is achieved using animation-delay; 4. Pay attention to browser compatibility, performance optimization, triggering methods and keeping animations simple. By mastering these core points, you can easily create smooth and beautiful CSS animations.
    CSS Tutorial . Web Front-end 678 2025-06-30 01:04:40
  • What is the difference between position: relative, absolute, fixed, and sticky?
    What is the difference between position: relative, absolute, fixed, and sticky?
    The position attribute has four values: relative, absolute, fixed, and sticky, and their behaviors are different. 1. Relative: The element is offset from its original position and is still in the document flow; 2. Absolute: Depart from the document flow, positioning relative to the nearest positioning ancestor elements; 3. Fixed: Depart from the document flow, always positioning relative to the viewport, keeping the position unchanged when scrolling the page; 4. Sticky: Between relative and fixed, according to the scroll position switching behavior, you need to specify top, bottom and other values ??to take effect, which are often used to fix the header or sidebar.
    CSS Tutorial . Web Front-end 687 2025-06-30 01:03:21
  • How to debug common problems CSS tutorial
    How to debug common problems CSS tutorial
    Use browser developer tools to check elements to view the styles and possible coverage issues of the actual application; 2. Check CSS syntax errors, such as missing semicolons, spelling errors, etc.; 3. Confirm that the style sheet is correctly linked, and there are no 404 errors or path issues; 4. Pay attention to layout problems such as fold margins and floating not cleared to affect the layout. Debugging CSS requires combining tools and basic checks. Most problems are caused by common errors or overwrite logic.
    CSS Tutorial . Web Front-end 596 2025-06-30 01:02:21
  • Which CSS Selectors are the most performant and why?
    Which CSS Selectors are the most performant and why?
    The best performance of CSS is usually ID and class selector. 1. ID selectors are the fastest, because their uniqueness makes the browser stop immediately after searching, which is suitable for single-style applications; 2. Class selectors are balanced and reusable, suitable for most style tasks; 3. Avoid excessive nesting or complex selectors (such as pseudo-classes, attribute selectors), because their parsing is slow, especially in large projects. Prioritize the use of simple selectors to improve rendering efficiency and maintain code maintenance.
    CSS Tutorial . Web Front-end 135 2025-06-30 01:01:11
  • How to use the :not() pseudo-class in CSS Selectors to exclude elements?
    How to use the :not() pseudo-class in CSS Selectors to exclude elements?
    The :not() pseudo-class of CSS applies styles by excluding specific elements, such as div:not(.special) selects all divs except .special class. The core points are as follows: 1. Only one selector can be used in:not(). If you need to exclude multiple ones, such as p:not(.intro):not(.outro); 2. You can combine them with other selectors to implement dynamic styles, such as a:not([href^="http://"]); 3. Avoid excessive nesting to keep the code clear and easy to maintain.
    CSS Tutorial . Web Front-end 423 2025-06-30 00:58:41
  • How does the transform-origin property work?
    How does the transform-origin property work?
    Transform-origin is used to change the center point of CSS transformation, and is the center of the element by default. Different origins can be specified by setting keywords, percentages or length values, such as topleft or 10px20px. It is often used to achieve animation effects starting from corners or edges when rotating or scaling. Typical application scenarios include rotating the panel from the corner, scaling elements from one side, and coordinating transition animations with layout changes. Note that the percentage is based on the element itself rather than the parent container, and the transformation of the origin only affects the visual presentation process without changing the final position. When using it, avoid missing actual transform properties and ensure browser compatibility testing.
    CSS Tutorial . Web Front-end 878 2025-06-30 00:53:00
  • What is the box-shadow property and how do you use it?
    What is the box-shadow property and how do you use it?
    The box-shadow property of CSS is used to add shadow effects around elements. Its core usage includes: 1. Define horizontal offset, vertical offset, blur radius, extension radius, color and inset keywords; 2. Add multiple shadows with commas separated; 3. Dropshadows is used to make elements look out of the page, while insetshadows is used for internal shadows; 4. Use reasonably to avoid affecting performance. For example, box-shadow:5px5px10pxrgba(0,0,0,0.3) creates a shadow that is in the lower right corner and translucent.
    CSS Tutorial . Web Front-end 183 2025-06-30 00:50:41
  • How to style the first letter or first line of a text block?
    How to style the first letter or first line of a text block?
    In web design, using CSS pseudo-elements can achieve the style beautification of the first letter or first line of the text block. 1. Use ::first-letter to add styles to the first letter of the paragraph, such as getting bigger, discolored, floating, etc., which are often used for the "capsular letter sinking" effect; 2. Use ::first-line to set indentation, color, background and other styles for the first line of the paragraph; 3. When applying, it is necessary to note that both are only suitable for block-level elements, and reasonably set attributes such as margin and float to avoid typography confusion; 4. In actual development, it is often used for content display scenarios such as article text, blog summary, etc., and combined with font services and responsive design can improve visual hierarchy and readability.
    CSS Tutorial . Web Front-end 319 2025-06-30 00:50:02
  • What is the difference between :nth-child and :nth-of-type in CSS Selectors?
    What is the difference between :nth-child and :nth-of-type in CSS Selectors?
    :nth-child first checks the position of the element in all child elements, and then determines whether it is the specified type; :nth-of-type first filters out the same type elements and selects them in order. 1.:nth-child(n) is used when selecting by position and determining that the position is the target label; 2.:nth-of-type(n) is suitable for selecting specific elements in type order in mixed content. Both support formulas and keywords such as even and odd, but the core difference is that the counting objects are different: the former is based on all child elements, while the latter is only for elements of the same type.
    CSS Tutorial . Web Front-end 848 2025-06-30 00:45:00
  • A practical CSS tutorial on View Transitions API
    A practical CSS tutorial on View Transitions API
    TheViewTransitionsAPIenablessmoothpagetransitionsusingminimalJavaScriptandCSS.1.Itworksbycapturingsnapshotsoftheoldandnewviews,thenanimatingbetweenthemwhenDOMchangesarewrappedindocument.startViewTransition().2.Youcanstyletransitionsusingpseudo-elemen
    CSS Tutorial . Web Front-end 535 2025-06-30 00:43:11
  • What is the general sibling combinator (~)?
    What is the general sibling combinator (~)?
    The universal sibling selector (~) in CSS is used to select all sibling elements after the specified element as long as they share the same parent element. ① It is not necessarily a sibling element that follows, but all subsequent sibling elements that meet the conditions; ② must be sibling nodes under the same parent element; ③ can match multiple elements; for example, using h2~p will select all elements that are after h2 and at the same level. Common uses include: ① Set styles for paragraphs after the title; ② Apply styles to elements after specific list items; ③ Highlight the content after the required labels in the form. But it does not select sibling nodes before the target element, elements nested within other tags, or elements under different parent nodes. Therefore, in the case where the structure later includes inner and outer, h2~p only
    CSS Tutorial . Web Front-end 303 2025-06-30 00:39:30
  • CSS tutorial for creating a card layout
    CSS tutorial for creating a card layout
    To achieve a good-looking and practical card layout, you can follow the following steps: 1. Use Flexbox to quickly build a responsive container, set display:flex, flex-wrap:wrap and gap to control arrangement and spacing; 2. Beautify the card style by setting max-width, box-shadow, padding and other attributes; 3. Use CSSGrid to achieve more complex typesetting, such as automatic filling of columns and responsive column width; 4. Pay attention to responsive common problems such as image size, text line breaks, and spacing consistency. These methods can effectively improve the aesthetics and adaptability of the layout.
    CSS Tutorial . Web Front-end 438 2025-06-30 00:27:20
  • How can you pause and resume a CSS animation?
    How can you pause and resume a CSS animation?
    To pause and restore CSS animation, the most direct way is to dynamically switch the animation-play-state attribute using JavaScript. Controlling this property through JavaScript allows pause and playback to be achieved without restarting the painting. The specific steps include: 1. Add an event listener (such as button click); 2. Check the current animation status; 3. Dynamic switching status. In addition, if you only need to pause the animation during hover, you can implement it through the :hover pseudo-class combined with @keyframes, but this method is suitable for simple interactions and is not suitable for complex logic. For multiple animations or more complex scenes, you can process animations by index, reset animation state or manage states with CSS variables, and pay attention to performance
    CSS Tutorial . Web Front-end 681 2025-06-30 00:02:12
  • Flexbox vs Grid: Mastering Modern CSS Layout
    Flexbox vs Grid: Mastering Modern CSS Layout
    ChooseFlexboxforone-dimensionallayoutsandGridfortwo-dimensionallayouts.1)Flexboxisidealforaligningitemsinasingleroworcolumn,perfectfornavigationbarsorsidebars.2)Gridexcelsincreatingcomplex,grid-basedstructures,suitableforgalleriesordashboards.
    CSS Tutorial . Web Front-end 973 2025-06-29 01:31:30

Tool Recommendations

jQuery enterprise message form contact code

jQuery enterprise message form contact code is a simple and practical enterprise message form and contact us introduction page code.
form button
2024-02-29

HTML5 MP3 music box playback effects

HTML5 MP3 music box playback special effect is an mp3 music player based on HTML5 css3 to create cute music box emoticons and click the switch button.

HTML5 cool particle animation navigation menu special effects

HTML5 cool particle animation navigation menu special effect is a special effect that changes color when the navigation menu is hovered by the mouse.
Menu navigation
2024-02-29

jQuery visual form drag and drop editing code

jQuery visual form drag and drop editing code is a visual form based on jQuery and bootstrap framework.
form button
2024-02-29

Organic fruit and vegetable supplier web template Bootstrap5

An organic fruit and vegetable supplier web template-Bootstrap5
Bootstrap template
2023-02-03

Bootstrap3 multifunctional data information background management responsive web page template-Novus

Bootstrap3 multifunctional data information background management responsive web page template-Novus
backend template
2023-02-02

Real estate resource service platform web page template Bootstrap5

Real estate resource service platform web page template Bootstrap5
Bootstrap template
2023-02-02

Simple resume information web template Bootstrap4

Simple resume information web template Bootstrap4
Bootstrap template
2023-02-02

Cute summer elements vector material (EPS PNG)

This is a cute summer element vector material, including the sun, sun hat, coconut tree, bikini, airplane, watermelon, ice cream, ice cream, cold drink, swimming ring, flip-flops, pineapple, conch, shell, starfish, crab, Lemons, sunscreen, sunglasses, etc., the materials are provided in EPS and PNG formats, including JPG previews.
PNG material
2024-05-09

Four red 2023 graduation badges vector material (AI EPS PNG)

This is a red 2023 graduation badge vector material, four in total, available in AI, EPS and PNG formats, including JPG preview.
PNG material
2024-02-29

Singing bird and cart filled with flowers design spring banner vector material (AI EPS)

This is a spring banner vector material designed with singing birds and a cart full of flowers. It is available in AI and EPS formats, including JPG preview.
banner picture
2024-02-29

Golden graduation cap vector material (EPS PNG)

This is a golden graduation cap vector material, available in EPS and PNG formats, including JPG preview.
PNG material
2024-02-27

Home Decor Cleaning and Repair Service Company Website Template

Home Decoration Cleaning and Maintenance Service Company Website Template is a website template download suitable for promotional websites that provide home decoration, cleaning, maintenance and other service organizations. Tip: This template calls the Google font library, and the page may open slowly.
Front-end template
2024-05-09

Fresh color personal resume guide page template

Fresh color matching personal job application resume guide page template is a personal job search resume work display guide page web template download suitable for fresh color matching style. Tip: This template calls the Google font library, and the page may open slowly.
Front-end template
2024-02-29

Designer Creative Job Resume Web Template

Designer Creative Job Resume Web Template is a downloadable web template for personal job resume display suitable for various designer positions. Tip: This template calls the Google font library, and the page may open slowly.
Front-end template
2024-02-28

Modern engineering construction company website template

The modern engineering and construction company website template is a downloadable website template suitable for promotion of the engineering and construction service industry. Tip: This template calls the Google font library, and the page may open slowly.
Front-end template
2024-02-28