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  • What is the difference between a CSS transition and a CSS animation?
    What is the difference between a CSS transition and a CSS animation?
    CSS transitions are suitable for simple state changes, while CSS animations are used for complex effects. 1. The transition only supports start and end states, which are suitable for simple interactions such as button hovering; 2. The animation provides complete control through keyframes, suitable for scenes with looping playback or precise timing; 3. Both should be given priority to use opacity and transform attributes for best performance; 4. It should be selected according to needs to avoid unnecessary animations distracting users.
    CSS Tutorial . Web Front-end 474 2025-06-24 00:24:11
  • What does the animation-direction property do (e.g., alternate)?
    What does the animation-direction property do (e.g., alternate)?
    Theanimation-directionpropertyinCSScontrolsthedirectionofananimationacrosscycles,offeringfourvalues:1.normalplaystheanimationforwardeachtime,2.reverseplaysitbackward,3.alternatereversesdirectiononeverycyclestartingforward,and4.alternate-reversestarts
    CSS Tutorial . Web Front-end 505 2025-06-24 00:23:51
  • What do the flex-grow, flex-shrink, and flex-basis properties do?
    What do the flex-grow, flex-shrink, and flex-basis properties do?
    In a Flexbox layout, flex-grow, flex-shrink, and flex-basis are the three core attributes that control the behavior of child elements. 1.flex-grow determines how much the element can expand when there is extra space, and the larger the value, the larger the proportion; 2.flex-shrink determines the proportion of element shrinkage when there is insufficient space, and the larger the value, the more shrinkage; 3.flex-basis is the initial size of an element before it is stretched and can be set to a fixed value or percentage. They are usually set together by flex abbreviation properties. For example, flex:11200px means that equal proportion expansion and shrinkage are allowed, and adjusted from 200px as the starting point, thereby achieving a flexible and controllable layout effect.
    CSS Tutorial . Web Front-end 152 2025-06-24 00:20:30
  • How can you style scrollbars in CSS?
    How can you style scrollbars in CSS?
    Yes,youcanstylescrollbarsinCSS,butthelevelofcontrolvariesbybrowser.TocustomizescrollbarsforapolishedUI,use::-webkit-scrollbarpseudo-elementsforWebKitbrowsers(Chrome,Edge,Safari),allowingfullcustomizationlikecolors,sizes,andhovereffects.ForFirefox,app
    CSS Tutorial . Web Front-end 789 2025-06-24 00:18:22
  • How does CSS will-change property help with performance?
    How does CSS will-change property help with performance?
    Thewill-changepropertyinCSSsignalsthebrowserthatanelementisabouttochange,allowingittooptimizerendering.1.Itinformsthebrowserwhichpropertieswillchange,suchastransform,opacity,scroll-position,orcontents.2.Thebrowsermaythenpromotetheelementtoitsownlayer
    CSS Tutorial . Web Front-end 379 2025-06-24 00:17:01
  • What is the difference between content-box and border-box sizing?
    What is the difference between content-box and border-box sizing?
    The box-sizing property of CSS has two values: content-box and border-box. 1.content-box is the default value. The width and height of the element are only applied to the content area. padding and border will add the total size of the element; 2.border-box will include the content, padding and border in the set width and height to make the layout more controllable. For example, after setting width to 300px, under the content-box model, if 20pxpadding and 5pxborder are added, the actual width of the element becomes 350px; and when using border-box, regardless of paddi
    CSS Tutorial . Web Front-end 687 2025-06-23 00:45:11
  • What are mixins in Sass?
    What are mixins in Sass?
    MixinsinSassarereusableblocksofCSScodethatcanbeincludedanywhereusingthe@includedirective.TheyhelpkeepcodeDRYbyavoidingrepetition,especiallyforvendorprefixes,componentstyles,anddynamicstylingwitharguments.Mixinsdifferfromplaceholdersbecausetheyduplica
    CSS Tutorial . Web Front-end 933 2025-06-23 00:44:30
  • What Are CSS Counters and How Do You Use Them?
    What Are CSS Counters and How Do You Use Them?
    CSScountersareusefulforcreatingdynamicnumberinginwebprojects.1)Theyallowautomaticnumberingforlistsandheadings.2)Counterscanbenestedforhierarchicalnumberingsystems.3)Theyarelightweightbutmayhaveperformanceissueswithlargeelementcounts.4)Browsercompatib
    CSS Tutorial . Web Front-end 860 2025-06-23 00:42:31
  • CSS Animations: Unleashing the Power of Web Animation
    CSS Animations: Unleashing the Power of Web Animation
    We can fully utilize the powerful functions of CSS animation on web pages through the following steps: 1) Create animations with @keyframes and animation properties; 2) Use hardware to accelerate optimization performance to avoid triggering re-calculation of publishing; 3) Orchestrate complex sequences through animation timelines; 4) Use animations in balance, consider barrier-free access, and maintain a consistent animation style.
    CSS Tutorial . Web Front-end 905 2025-06-23 00:40:11
  • What is the CSS Box Model and what are its components?
    What is the CSS Box Model and what are its components?
    TheCSSBoxModelconsistsoffourcomponents:content,padding,border,andmargin.1.Contentisthecoreareawheretextormediaresideandisdefinedbywidthandheightproperties.2.Paddingaddsinnerspacebetweencontentandborderandcanbesetwithshorthandordirectionalvalues.3.Bor
    CSS Tutorial . Web Front-end 665 2025-06-23 00:38:51
  • What is CSS specificity and how is it calculated?
    What is CSS specificity and how is it calculated?
    CSSspecificitydetermineswhichstylesareappliedwhenthereareconflictingrulestargetingthesameelement.1.Inlinestyleshavethehighestweightat1000.2.IDscountas100each.3.Classes,pseudo-classes,andattributesareworth10each.4.Elementsandpseudo-elementsadd1pointea
    CSS Tutorial . Web Front-end 930 2025-06-23 00:37:22
  • Demystifying @keyframes: Your Key to CSS Animation Mastery
    Demystifying @keyframes: Your Key to CSS Animation Mastery
    @keyframesisaCSSrulethatdefinesanimationbehaviorovertime.1)ItallowscontroloverCSSpropertiesliketransformandopacity.2)Usetimingfunctionstocustomizeanimationfeel.3)Avoidoveruseandconsiderperformanceanddevicecompatibility.4)Combinewithtransitionsfordyna
    CSS Tutorial . Web Front-end 790 2025-06-23 00:31:00
  • CSS Case sensitivity: impacting coding style?
    CSS Case sensitivity: impacting coding style?
    CSSiscase-insensitiveforpropertynames,values,andselectors,butcase-sensitiveforURLs,fontnames,andcustomproperties.1)Uselowercaseforconsistencyinpropertynamesandvalues.2)Double-checkcase-sensitiveelementslikeURLsandfontnames.3)Establishaclearnamingconv
    CSS Tutorial . Web Front-end 607 2025-06-23 00:30:30
  • What is the difference between :nth-child(n) and :nth-of-type(n)?
    What is the difference between :nth-child(n) and :nth-of-type(n)?
    The core difference between :nth-child(n) and :nth-of-type(n) is the different counting methods. 1.:nth-child(n) counts in the order of all child elements, and matches only if the nth child element happens to be the target label; 2.:nth-of-type(n) counts only in the order of the same element, selects the nth child element of that type in the parent element, and ignores other types of elements. When using it, you should choose according to whether the element type needs to be considered. The former is suitable for situations where the structure is fixed and the position is required, while the latter is suitable for situations where only a specific type of element needs to be selected in mixed elements.
    CSS Tutorial . Web Front-end 449 2025-06-23 00:29:31

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