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- Describe the `object-fit` property for images/videos
- object-fit is a CSS property that controls how images or videos scale and align within their containers. 1.fill: stretch and fill the container, which may be deformed; 2.contain: Keep scaled, display the content in full, and leave blank; 3.cover: Keep scaled, cover the container, which may be cropped; 4.none: Keep the original size, which may be incomplete; 5.scale-down: reduce the proportion, and the effect is similar to contains but does not enlarge. When using it, be careful that the container must have a fixed width and height, and avoid setting width:auto or height:auto. Compatibility is good, but in older browsers you can consider background images or JavaScript alternatives. Suitable for responsive
- CSS Tutorial . Web Front-end 915 2025-07-29 02:29:50
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- css transform skew example
- skew() is a CSS deformation function, which is used to tilt elements along the X axis, Y axis, or both at the same time; 1. skew(angleX) is only tilted along the X axis, skew(angleX,angleY) is tilted along the two axes at the same time; 2. In the example, transform:skew(20deg, 5deg) is triggered by hover to realize card tilt animation; 3. Pseudo-elements can be used to tilt the background while the text remains forward; 4. Children elements can offset the parent tilt by reverse skew; 5. skew does not affect the document flow, and can adjust the tilt fulcrum with transform-origin, which is often used for visual enhancement, but excessive use should be avoided to affect readability.
- CSS Tutorial . Web Front-end 869 2025-07-29 02:27:51
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- How to use CSS blend modes?
- CSSblendmodescontrolhowelementsvisuallyinteractwithbackgroundsoroverlappingcontentusingtwoproperties:1.mix-blend-modeblendsanelementwithcontentbehindit,requiringoverlappingelementsforvisibleeffects;2.background-blend-modeblendsanelement’sownbackgroun
- CSS Tutorial . Web Front-end 183 2025-07-29 02:25:20
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- How to create a responsive card layout?
- Use CSSGrid to combine auto-fit and minmax (280px, 1fr) to create an automatic responsive card layout, which can be adaptively arranged under different screen sizes without media queries; 2. Each card should contain pictures, titles, descriptions and buttons, and improve visual performance by setting border, box-shadow, hover effects and object-fit:cover styles, etc.; 3. On mobile devices, you can force the grid to be a single column through media queries, and adjust the font size to optimize readability; 4. The optional Flexbox solution achieves similar effects through flex-wrap and flex attributes, but Grid is more concise and efficient when processing regular grids. The final recommendation is
- CSS Tutorial . Web Front-end 645 2025-07-29 01:59:21
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- How can you reduce file size of CSS?
- To reduce CSS file size, first remove unused CSS code, then compress and minimize CSS, then use efficient CSS selectors and avoid redundant styles, and finally optimize critical CSS to speed up first-screen loading. Useless code can be effectively removed through tools such as PurgeCSS or UnCSS, which can sometimes reduce file size by more than 50%. Minimize it with CSSNano or build tools such as Webpack and enable Gzip or Brotli compression to further reduce the transmission volume; adopt class selectors instead of complex selectors and reuse shared classes to improve performance and maintenance; performance-sensitive sites can also extract and inline key CSS to delay loading of other styles, thereby significantly improving pages
- CSS Tutorial . Web Front-end 209 2025-07-29 01:36:01
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- What is the CSS `will-change` property best used for?
- The best use scenario for CSS will-change attribute is to inform browser elements in advance of possible changes in order to optimize rendering performance, especially for animation or transition effects. ① It should be applied before the animation properties (such as transform, opacity or position) changes; ② Avoid premature use or long-term retention, and should be set before the change occurs and removed after completion; ③ It should only be used for necessary properties rather than using will-change:all; ④ Suitable for scenarios such as large scrolling animations, interactive UI components, and complex SVG/Canvas interfaces; ⑤ Modern browsers can usually optimize automatically, so there is no need to use will-change in all animations. Proper use can improve
- CSS Tutorial . Web Front-end 609 2025-07-29 01:05:41
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- How to style form inputs with CSS?
- Use the type selector to define the styles of text, mailbox and password input boxes respectively, and customize the check boxes and radio buttons through appearance:none; 2. Always set borders and shadows for the :focus status to improve accessibility; 3. Customize the placeholder colors and styles through the ::placeholder pseudo-element; 4. Use the :valid and :invalid pseudo-classes to provide visual feedback on form verification; 5. Use the browser-specific prefix to hide the default controls for numeric input to ensure cross-browser consistency. These steps enable beautiful, consistent, and easy-to-use form input controls.
- CSS Tutorial . Web Front-end 389 2025-07-29 00:57:31
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- How to use Google Fonts in CSS?
- Gotofonts.google.comandselectafontlikeOpenSans.2.Useeither@importinCSSorinHTMLtoincludethefont,withbeingbetterforperformance.3.Customizethefontbyadjustingweights,styles,andsubsetsintheURL.4.Alwaysprovideafallbackfontstacklike'OpenSans',Arial,sans-ser
- CSS Tutorial . Web Front-end 148 2025-07-29 00:20:21
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- How to create a grid in CSS?
- To define a grid container, you need to set display:grid; 2. Use grid-template-columns and grid-template-rows to set the row and column size; 3. Use fr, auto, % and other flexible units to achieve responsive layout; 4. Use repeat() function to simplify repeated column or row definitions; 5. Use minmax() and auto-fit/auto-fill to achieve adaptive grids; 6. Optionally, precisely control project location through grid-column, grid-row or grid-area; complete settings include container declaration, track definition, gap addition and responsive optimization, so that efficient and flexible two-dimensional layout can be built.
- CSS Tutorial . Web Front-end 175 2025-07-28 04:35:11
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- css modal popup example
- Use pure CSS to implement modal pop-up windows to control the visible and hidden checkbox. 1. Use input[type="checkbox"] as the status switch; 2. Use: checked .modal to control the display of modal boxes; 3. Use label[for] to trigger checking to achieve opening and closing; 4. Add @keyframes animation to achieve fade-in pop-up effect; 5. The close button or mask click area in the modal box can be bound to label control hidden. The entire process does not require JavaScript, is very compatible and has strong accessibility, and is suitable for static pages or lightweight interactive scenarios.
- CSS Tutorial . Web Front-end 916 2025-07-28 04:33:30
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- CSS flexbox guide
- Flexbox is a CSS elastic box model for one-dimensional layout. It realizes automatic adjustment of child elements by setting the container to display:flex; 1. The container uses display:flex to define elastic layout; 2. flex-direction to set the spindle direction; 3. Justify-content to control spindle alignment; 4. align-items to control cross-axis alignment; 5. flex-wrap determines whether to wrap lines; 6. align-content to manage multi-line alignment; projects can be resized using flex-grow, flex-shrink, flex-basis, or set uniformly through flex abbreviation, ali
- CSS Tutorial . Web Front-end 475 2025-07-28 04:30:41
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- What is the `gap` property in Flexbox and Grid?
- The gap attribute is used in CSS to control the spacing between elements in the layout, and has different manifestations in Flexbox and Grid. 1.gap is the abbreviation of row-gap and column-gap, which can set the spacing between rows and columns at the same time; 2. In Flexbox, modern browsers have widely supported it, but only affects the spacing of the spindle and cross-axis when flex-wrap is enabled; 3. It is better to support it in Grid and can more flexibly control the row-column spacing of two-dimensional layouts; 4. It is recommended to avoid compatibility issues between old browsers and give priority to margins to achieve cleaner layouts.
- CSS Tutorial . Web Front-end 159 2025-07-28 04:29:50
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- css neumorphism design example
- Neumorphism is a UI style that combines flat and quasi-physical design, achieving a three-dimensional effect of floating or sagging elements through soft shadows. 1. The background and element colors need to be similar to the color to achieve a sense of fusion. For example, the body and buttons use #e0e0e0; 2. Use double shadows to create a three-dimensional sense, with the outer shadows 8px8px16px#c9c9c9 and -8px-8px16px#ffffffff. When pressed, change to inset inner shadow and scale the elements; 3. It is recommended to round corners 12px~20px to maintain softness; 4. Avoid borders to maintain seamless vision. Can be applied to buttons, input boxes, switches, cards and other elements, such as cards use box-shadow:10px10px20px#c9c
- CSS Tutorial . Web Front-end 428 2025-07-28 04:27:41
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- How to create CSS animations using `@keyframes`?
- @keyframes is the core tool for CSS animations, used to define animation keyframes. 1. It realizes animation effects by specifying style changes when different percentages, such as @keyframesspin to control rotation; 2. It needs to be bound to elements with animation attributes, set duration, speed function, etc.; 3. Common problems include inconsistent names, no duration or being overwritten by other styles; 4. Multiple keyframes can be added to make the animation more natural, such as bounce bounce effect; 5. You can also use animation-direction, animation-delay and other control directions and delays. It is recommended to simplify animations and use developer tools to debug.
- CSS Tutorial . Web Front-end 295 2025-07-28 04:24:30
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