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- How to create a sticky footer in CSS
- Use Flexbox to create sticky footers. 1. Set the page container to flex-direction:column and min-height:100vh; 2. Set flex:1 for the main element to fill the remaining space; 3. Footer is naturally placed at the bottom, the content is pushed to the bottom of the window for a short time, and the content extends with the content for a long time. This method has good compatibility and reliable layout, so it is recommended to use it first.
- CSS Tutorial . Web Front-end 632 2025-09-06 04:35:02
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- How do you hide content visually but keep it accessible to screen readers?
- Tohidetextvisuallywhilekeepingitaccessible,usethe.sr-onlyCSSclass.1.Applystyleslikeposition:absolute,clip:rect(0000),andwidth:1pxtomovetextoff-screen.2.Usethistechniqueforicon-onlybuttons,formlabels,orhiddenheadings.3.Avoiddisplay:noneorvisibility:hi
- CSS Tutorial . Web Front-end 806 2025-09-06 03:50:02
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- How to use the :is() pseudo-class in CSS
- :is() is a CSS pseudo-class used to simplify complex selectors, which reduces duplication by grouping multiple selectors. 1. It accepts a set of selectors as parameters, and matches any of them to take effect. For example: is(header,nav,footer)a:hover can replace the repeated parent element writing method. 2. The main advantages include reducing code duplication, improving maintainability, and ignoring invalid selectors without invalidating the entire rule. 3. Practical applications include setting the margins of titles at all levels in the article, and adding a hover effect to pictures or videos in the card. 4. It can be used in combination with :where() to control specificity, :is() retains the highest specificity, while :where() has no specificity. 5.
- CSS Tutorial . Web Front-end 473 2025-09-06 03:24:02
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- How to make table cells have equal width in CSS
- Settable-layout:fixedonthetableelementtoenableequalcellwidthdistributionregardlessofcontent;2.Applyawidthtothetable,suchaswidth:100%,todefinethetotalspace;3.Optionallysetuniformpercentagewidthsonthandtdelements(e.g.,width:25%forfourcolumns)orletthebr
- CSS Tutorial . Web Front-end 131 2025-09-06 02:55:01
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- How to create a responsive circle in CSS
- To create a responsive CSS circle, you must keep the width and height equal and set the border-radius to 50%; 1. Use relative units such as percentage or vw to make the width and height 30% to achieve responsiveness; 2. Use aspect-ratio:1/1 attribute to ensure the width and height are consistent to form a circle; 3. When aspect-ratio is not supported, use padding-bottom:50% wrapping container to create equal width and height space; 4. You can use viewport units such as 20vw or 30vmin to achieve screen size scaling; 5. Use margin:auto and absolute positioning to achieve center display, ultimately ensuring that the circle maintains perfect proportions on any device.
- CSS Tutorial . Web Front-end 229 2025-09-06 02:13:03
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- How to add a border to an element with CSS
- ToaddabordertoanelementwithCSS,usetheborderproperty,whichallowsyoutodefinethewidth,style,andcolorinoneline,suchasborder:2pxsolidblack;orsetthemseparatelyusingborder-width,border-style,andborder-color;youcanalsoapplyborderstospecificsideslikeborder-to
- CSS Tutorial . Web Front-end 176 2025-09-06 00:16:03
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- Describe the usage of the CSS `calc()` function
- CSS's calc() function allows mathematical operations in style sheets to implement dynamic layout and responsive design. 1. The basic syntax is calc (expression), which supports addition, subtraction, multiplication and division, and requires spaces on both sides of the operator; 2. Different units can be mixed, and the browser will automatically handle the calculation; 3. It is often used to set properties such as width, font size, etc., such as width:calc (100%-20px) or font-size:calc (16px 0.5vw); 4. Pay attention to the operation sequence and parentheses to ensure compatibility and code maintainability; 5. Modern browsers widely support it, but over-complex expressions should be avoided to keep the code clear and easy to understand.
- CSS Tutorial . Web Front-end 678 2025-09-05 08:49:01
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- How to create a loading spinner with CSS
- To create a pure CSS loading spinner, just use HTML and CSS; 1. Create an empty div element as a spinner; 2. Use CSS to set width, height, border, rounded corners and apply rotation animation; 3. Optional different styles such as pulse points or double ring reverse rotation; 4. Put the spinner into the container to display in the center; 5. Use JavaScript to control the display to hide, and pay attention to color, animation speed and accessibility to improve the user experience.
- CSS Tutorial . Web Front-end 162 2025-09-05 08:41:01
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- How to create a neumorphism card effect in CSS
- Use soft background colors such as #e0e5ec to avoid pure black or white; 2. The card background is similar to the page and apply double shadows: light shadow in the lower right corner and dark shadow in the upper left corner, such as box-shadow:8px8px16px#c9ced3,-8px-8px16px#ffffff; 3. Optional interactive effect: achieve a pressing feeling through inset shadows, use inset4px4px8px#c9ced3 and inset-4px-4px8px#ffffff; 4. Maintain color consistency, take colors from the same color disk, avoid borders, use 10-20px rounded corners; 5. Fine-tune accessibility to ensure the text is readable, and test different lighting rings
- CSS Tutorial . Web Front-end 858 2025-09-05 08:10:02
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- How to create a animated gradient background with CSS
- Yes, animated gradient backgrounds can be created through pure CSS without JavaScript or images. First, use linear-gradient to define multi-color gradients and set background-size to 400% to support smooth movement. Then, change background-position through @keyframes animation to achieve flow effects, such as from 0% to 100% and return, and realize infinite loops with animation attributes. Finally, you can adjust the speed, direction, angle and color scheme to optimize the visual effect, ensure responsive performance and add pseudo-element overlays to improve readability. The whole process is lightweight and has strong compatibility, and finally achieves a beautiful and smooth dynamic background.
- CSS Tutorial . Web Front-end 914 2025-09-05 07:43:01
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- How to create an animated gradient background in CSS
- To create a CSS animation gradient background, you need to combine linear-gradient and @keyframes animation to implement it; 1. Set a gradient with background to 45deg and use background-size: 400% to reserve moving space; 2. Define @keyframesgradientShift, and change the background-position from 0% to 50% to 100% to form a left and right flow effect; 3. Apply the animation to the elements, the duration is 10s, and the loop is infinite, and finally achieve a smooth gradient effect.
- CSS Tutorial . Web Front-end 550 2025-09-05 06:08:01
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- How to select an empty element in CSS using the :empty pseudo-class
- To use the empty pseudo-class of CSS, you must ensure that there is no content in the element, including text, spaces or comments; 1. Use div:empty to set styles for completely empty divs, such as background color and height; 2. It is often used to hide placeholders, prompt missing content or form verification; 3. Elements containing spaces, newlines, or comments are not considered empty; 4. You can improve the accuracy with class selectors, but it is necessary to note that blanks in HTML will destroy the "empty" state; 5. All modern browsers support:empty, but if blanks need to be ignored, JavaScript or server logic should be used.
- CSS Tutorial . Web Front-end 596 2025-09-05 03:36:01
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- How to style a form in CSS
- StartwithsemanticHTMLusingproperlabelsandformelementsforaccessibility.2.UseCSStocreateacleanlayoutwithmax-width,properspacing,box-sizing:border-box,andreadablefonts.3.Stylethesubmitbuttonwithbackgroundcolor,padding,border-radius,andhovereffectsforvis
- CSS Tutorial . Web Front-end 509 2025-09-05 03:12:01
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- How to use the CSS isolation property?
- TheCSSisolationpropertycreatesanewstackingcontexttocontrolblendingandlayering.1.Itpreventsunwantedblendingwithmix-blend-modebyisolatingchildrenwithinacontainer.2.Itcreatesastackingcontextwithoutsideeffectslikeopacityortransforms,usefulformodalsortool
- CSS Tutorial . Web Front-end 624 2025-09-04 09:49:01
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