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  • What is the difference between align-self and align-items?
    What is the difference between align-self and align-items?
    align-items is used to set the default cross-axis alignment of all items in the entire flex container, while align-self is used to cover an item individually. 1.align-items is a container attribute, affecting all child elements. The default value is stretch. You can choose flex-start, flex-end, and center; 2.align-self is an attribute of individual child elements, which can override container settings and allow specific elements to adopt different alignment methods; 3. When using it, you should first set a unified control of align-items, and then adjust individual exceptions through align-self. Both must be effective in the parent container of display:flex.
    CSS Tutorial . Web Front-end 338 2025-07-05 02:01:20
  • How to chain multiple animations together?
    How to chain multiple animations together?
    To make multiple animations play in sequence, you can set delays through CSS's animation-delay to achieve simple concatenation; use JavaScript to listen for events or setTimeout for dynamic control; or use the timeline functions of animation libraries such as GSAP to arrange animations in order. 1. The CSS method realizes sequential playback by adding a delay value equal to the duration of the previous animation to the subsequent animation, which is suitable for simple scenes; 2. The JS method triggers the next animation by listening to the animationend event or using setTimeout, which is flexible and controllable but requires compatibility; 3. Animation libraries such as GSAP provide timeline functions, which can easily manage complex animation sequences and support intervals and overlapping effects; pay attention to delay calculation
    CSS Tutorial . Web Front-end 996 2025-07-05 01:59:11
  • Comparing CSS Reset and CSS Normalize approaches
    Comparing CSS Reset and CSS Normalize approaches
    The main difference between CSSReset and CSSNormalize is that the strategies for handling browser default styles are different. CSSReset provides a blank starting point by removing all default styles, and commonly used global selectors such as * or body to clear margins, fills, etc.; while Normalize.css achieves cross-browser consistency through targeted repairs, retains useful default styles and corrects specific problems. Use CSSReset to suit highly customized design systems, prefer scenarios from scratch, or combine with tool-first frameworks such as TailwindCSS; while Normalize is more suitable for projects that value development efficiency and want to retain the advantages of browser default styles, especially for responsive websites and modern H needs
    CSS Tutorial . Web Front-end 477 2025-07-05 01:45:11
  • What does the position property do in CSS?
    What does the position property do in CSS?
    TheCSSpositionpropertycontrolselementplacementwithfivevalues:static,relative,absolute,fixed,andsticky.Staticisdefaultandfollowsdocumentflow.Relativeshiftsanelementfromitsnormalpositionwhilekeepingspaceintact.Absolutepositionsrelativetothenearestposit
    CSS Tutorial . Web Front-end 705 2025-07-05 01:43:50
  • Optimizing CSS animations for performance
    Optimizing CSS animations for performance
    To optimize CSS animation performance, you must first select appropriate attributes and reduce rearrangement and redrawing; 1. Use will-change and translateZ to inform the browser element in advance that changes will be made, but avoid abuse; 2. Use transform and opacity animations first because they do not trigger reordering; 3. Control the frame rate to maintain 60fps, avoid forced synchronous layout, and use requestAnimationFrame to arrange logic; 4. Use hardware acceleration reasonably and only turn on when necessary to avoid layer explosions affecting GPU performance.
    CSS Tutorial . Web Front-end 436 2025-07-05 01:32:11
  • Understanding the difference between absolute and relative positioning in css
    Understanding the difference between absolute and relative positioning in css
    position:relative keeps the element in the document stream, but allows offset and can be used as a reference point for absolutely positioning child elements; position:absolute disconnects the element from the document stream and locates based on the recent non-static positioning ancestor elements. 1. Use relative to fine-tune the position without affecting the layout and establish a context for the internal absolute positioning elements; 2. Use absolute to achieve positioning away from the document flow, suitable for drop-down menus, floating prompts, icon positioning and other scenarios; 3. Common usages include the relative positioning container wrapping absolute positioning sub-elements, such as text descriptions on the picture, indicator points in the tab page, and tooltips next to buttons. The combination of the two can more accurately control layout behavior.
    CSS Tutorial . Web Front-end 483 2025-07-05 01:23:00
  • Exploring CSS blend modes for creative effects
    Exploring CSS blend modes for creative effects
    CSSblendmodes is a color blending effect achieved through the mix-blend-mode and background-blend-mode properties. 1.mix-blend-mode is suitable for the entire element and its content; 2.background-blend-mode only affects between background layers. It is common in scenes such as image overlay, text and background fusion, such as text penetration, background texture fusion, and button highlighting effects. When using it, you need to pay attention to the effects of performance, browser compatibility and color mode. Debugging can be modified and observed in real time through developer tools.
    CSS Tutorial . Web Front-end 210 2025-07-05 01:19:50
  • Creating smooth scrolling effects with css
    Creating smooth scrolling effects with css
    To achieve smooth scrolling in CSS, 1. You can use scroll-behavior:smooth; to achieve smooth scrolling in the basic anchor point; 2. Use JavaScript's scrollTo() or scrollIntoView() methods to achieve more flexible scrolling control; 3. Combine scroll monitoring and CSS animation to improve the visual experience. These three methods are applicable to different scenarios, and gradually enhance the user experience from simple to complex. The key is to select the appropriate technology combination according to your needs and pay attention to the scope of application.
    CSS Tutorial . Web Front-end 557 2025-07-05 01:17:10
  • Creating grid layouts with css grid
    Creating grid layouts with css grid
    CSSGrid is a tool for two-dimensional layout of web pages. After creating a container through display:grid, use grid-template-columns and grid-template-rows to define rows and columns; 1. Use fr units or fixed values ??to set the size; 2. Use gap to control spacing, justify-items and align-items to control alignment; 3. Specify the starting line position of the child item through grid-column and grid-row; 4. Use repeat() to simplify the definition of repeated structures; 5. Use grid-area to implement naming area template layout.
    CSS Tutorial . Web Front-end 492 2025-07-05 01:09:40
  • Understanding and using CSS Container Queries (emerging topic)
    Understanding and using CSS Container Queries (emerging topic)
    CSSContainerQueries is a new responsive design mechanism that allows restyling based on the size of component containers rather than viewport size. The steps to use are: 1. Define the container type through container-type, such as inline-size or size; 2. Optionally use container-name to name the container; 3. Use @container query to write corresponding style rules. Applicable scenarios include cards, toolbars, advertising modules, and other components that need to be adaptively displayed in different contexts. Notes include explicit declaration of container type, performance impact and compatibility issues. Currently, mainstream browsers have supported it but need to combine downgrade processing or progressive enhancement strategies.
    CSS Tutorial . Web Front-end 861 2025-07-05 01:06:10
  • When should you use !important and what are its implications for CSS Selectors specificity?
    When should you use !important and what are its implications for CSS Selectors specificity?
    Use !important should override styles that cannot be modified directly, such as third-party or uncontrollable inline styles, if necessary. 1. Applicable scenarios: inline styles injected by CMS or framework, third-party styles that cannot be rewrited later, and quick coverage during browser debugging. 2. Influence mechanism: mandatory rules are preferred, breaking the normal specificity level. If both parties use it, return to normal specificity judgment. 3. Potential risks: Increase debugging difficulty, reduce maintenance, and encourage bad habits, leading to more important superposition to form chaos. 4. Best practices: only use when there is no other solution, add comments to explain the reasons, avoid large-scale project abuse, and prioritize testing of non-important solutions. The overall CSS strategy should be examined when used frequently.
    CSS Tutorial . Web Front-end 158 2025-07-05 00:58:50
  • Styling Variable Fonts using CSS properties
    Styling Variable Fonts using CSS properties
    To use CSS attributes to control variable font styles, you need to master four core methods. 1. Use font-weight to set the numerical values ??from 1 to 1000 to finely control the word weight, such as p{font-weight:450;}; 2. Use font-stretch to adjust the font width in percentage, such as .title{font-stretch:110%;}; 3. Use font-style to combine font-variation-settings to achieve tilt or custom axis adjustment, such as .emphasis{font-variation-settings:"slnt"20;}; 4. Combine multi-axis parameters
    CSS Tutorial . Web Front-end 531 2025-07-05 00:56:21
  • How to create responsive typography?
    How to create responsive typography?
    The key to responsive typography is to establish flexible rules to adapt to different devices. Use relative units such as rem or em to replace px, and facilitate conversion with html{font-size: 62.5%;}; set key breakpoints (such as 768px and 1024px) to manually adjust the font size, line height and spacing; control the line height to 1.4~1.6 times of the font, and reasonably set the paragraph spacing; allow the user's viewport to zoom, avoid forced restrictions; maintain the default viewport settings and ensure that the minimum font is not less than 16px, thereby improving reading comfort under multiple devices.
    CSS Tutorial . Web Front-end 131 2025-07-05 00:49:41
  • A practical CSS tutorial on the :has() parent selector
    A practical CSS tutorial on the :has() parent selector
    CSS can now use the :has() pseudo-class to reverse select the parent element according to the child element. 1. The syntax is parent:has(child), such as div:has(img) to add borders to divs containing pictures; 2. Support chain conditions such as section:has(h1,.highlight); 3. Common uses include adjusting layout according to videos, sidebar components, etc.; 4. Currently supports Chrome105, Safari15.4, Edge106, and Firefox does not support it for the time being, and it is necessary to provide a backup solution; 5. It is recommended to keep the conditions concise to avoid performance problems when using it.
    CSS Tutorial . Web Front-end 1018 2025-07-05 00:46:51

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