Article Tags
Article Tags
How to handle long words and text overflow with CSS?
Use overflow-wrap:break-word to safely wrap long words and only break words when necessary; word-break:break-all forces word breaks at any position, which is suitable for technical scenarios; text-overflow:ellipsis needs to be combined with white-space:nowrap and overflow:hidden to achieve omission.
Jan 26, 2026 am 12:22 AM
How to use CSS math functions like min(), max(), and clamp()?
Using min()/max() instead of fixed values can achieve dynamic boundary control, such as font-size scaling with the viewport between 1rem–2rem; clamp() is the abbreviation of min(max()) and is used for fluid typesetting; the unit type must be consistent, otherwise the declaration will be invalid.
Jan 26, 2026 am 12:13 AM
How to dynamically change CSS variables with JavaScript?
Use document.documentElement to obtain: rootCSS variable, use style.setProperty() to set it (requires -- prefix and string value), getComputedStyle().getPropertyValue() to read it, and use cssText for batch updates to avoid rearrangement.
Jan 25, 2026 am 04:19 AM
How to create an image comparison slider with CSS?
clip-pathdefinesavisibleregionfortheslider’stopimage,enablingresponsiveimagecomparisonbyclippingawayunwantedparts;useinset()orpercentage-basedpolygon()toavoidresizeissuesandensurecross-browsercompatibility.
Jan 25, 2026 am 03:56 AM
How to use media queries for mobile-first design in CSS? (Responsive Design)
Mobile-firstmeansstartingwithbasemobilestylesandusingmin-widthmediaqueriestoprogressivelyenhanceforlargerscreens,avoidingleaksandoverrides.Itprioritizesaccessibilitywithemunits,emphasizescontent-drivenbreakpointsoverdevice-specificones,andpreventscom
Jan 25, 2026 am 03:17 AM
What is the difference between position: relative, absolute, and fixed in CSS?
position:relative keeps the element in the document flow and is offset relative to its original position; position:absolute is out of the document flow and offset relative to the nearest positioned ancestor; position:fixed is always positioned relative to the viewport and does not move with scrolling.
Jan 25, 2026 am 03:16 AM
How to create a loading spinner with pure CSS?
TheCSSpropertiesthatmakeaspinnerspinareanimation(with@keyframesrotatingtransform:rotate())andborder(withasymmetriccoloring);animation-timing-function:linearensuressmoothmotion,andanimation-iteration-count:infiniteenablescontinuousrotation.
Jan 25, 2026 am 03:07 AM
How to build a card component with CSS Flexbox?
Flexboxisidealforcardlayoutsduetoitsrobusthandlingofunevencontent,responsivealignment,andconsistentspacing—superiortofloatsorinline-block—especiallywithvariabletextormixedmedia,avoidingfragileheight-matchinghacks.
Jan 25, 2026 am 02:05 AM
How to create a 'sticky' header that stays at the top with CSS?
position:stickyisahybridofrelativeandfixedpositioning:itflowsnormallyuntilreachingaspecifiedoffset(e.g.,top:0),thensticksinplaceduringscrolling—requiringascrollablecontainerandadefinedoffsetliketop,bottom,left,orright.
Jan 25, 2026 am 02:00 AM
What is the stacking context in CSS and how does z-index relate to it?
AnewstackingcontextiscreatedautomaticallywhencertainCSSproperties—likenon-autoz-indexonpositionedelements,opacity
Jan 25, 2026 am 12:22 AM
How does the CSS all: unset property work?
all:unsetresetsinheritedpropertiestoinheritedvaluesandnon-inheritedonestoinitialvalues,butskipsDOMattributes,customproperties,andsomelayout-relatedpropertieslikedirection;itdiffersfromall:initial(setsalltoinitial)andall:inherit(forcesinheritanceforal
Jan 24, 2026 am 05:04 AM
What is the difference between CSS custom properties and Sass variables?
CSScustompropertiesareruntime,cascading,andJavaScript-accessible,whileSassvariablesarecompile-time,file-scoped,andstrippedfromfinalCSS;theydifferinscoping,responsiveness,interpolation,performance,andcasesensitivity.
Jan 24, 2026 am 04:38 AM
How to debug complex CSS layout problems effectively
Startbyidentifyingthelayoutmodel—Flexbox,Grid,floats,orpositioning—tospotmisconfigurations.2.UsebrowserDevToolstoinspectcomputedstyles,toggleproperties,enablelayoutoverlays,andvisualizetheboxmodel.3.Isolatetheissuewithaminimaltestcase,removeunrelated
Jan 24, 2026 am 04:31 AM
How to center an element of unknown width and height in CSS?
Themostreliablemethodtocenteranelementwithunknowndimensionsisposition:absolutewithtop:50%,left:50%,andtransform:translate(-50%,-50%),requiringarelativelypositionedparent;flexboxissimplerwhensupportedbutneedsexplicitparentheightandhasalignmentcaveats.
Jan 24, 2026 am 04:28 AM
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