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- Describe how to control background size and position
- Controlling the background size and position can be achieved through background-size and background-position; 1. The background-size can be set to cover (cover), contains (adapting to container), specific values or percentages; 2. The background-position can be set by keywords or coordinate values, such as topleft, 50P%; 3. Combined with background-repeat, you can control the background repetition method, such as repeat, no-repeat, repeat-x/y, which is suitable for different visual effects and responsive layouts.
- CSS Tutorial . Web Front-end 954 2025-07-30 05:09:31
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- What is aspect-ratio in CSS?
- Theaspect-ratiopropertyinCSSdefinestheproportionalrelationshipbetweenanelement’swidthandheight,ensuringconsistentdimensionsduringresizing.1.Itallowselementstomaintainafixedratio,suchas16/9or1/1,regardlessofviewportchanges.2.Iteliminatestheneedforolde
- CSS Tutorial . Web Front-end 711 2025-07-30 04:51:21
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- How to create a dark mode with CSS?
- Use prefers-color-scheme media query to automatically enable dark mode according to user system preferences; 2. Add toggle buttons through JavaScript and combine CSS classes and localStorage to achieve manual mode switching and remember user selection; 3. The best practice is to combine both, prioritize system preferences but allow user coverage. If the user has selected the page, use the settings in localStorage, otherwise follow the system preferences, and use CSS custom attributes to uniformly manage theme colors to improve maintainability and user experience.
- CSS Tutorial . Web Front-end 471 2025-07-30 04:43:00
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- How to style breadcrumbs with CSS?
- Use semantic HTML structures, including, and aria-current attributes to ensure accessibility; 2. Add dynamic separators (such as/or>) through the ::after pseudo-element of CSS to avoid hard coding in HTML, and set hover effects and current page styles for links; 3. Use CSS custom attributes (such as --separator-color) to improve theme flexibility and facilitate reuse of different scenes; 4. Select modern styles such as capsule backgrounds, dots or arrow separators to enhance visual effects; 5. Set flex-wrap, white-space and text-overflow for responsive designs to prevent small screens from overflowing or line breaking confusion; finally, semantic tags
- CSS Tutorial . Web Front-end 821 2025-07-30 04:39:01
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- How to make a website responsive with CSS?
- Add viewport meta tags to ensure that the mobile device correctly renders the page; 2. Create a fluid layout using relative units such as percentages and rem; 3. Use CSS media queries to apply styles for different screen widths, and recommend mobile-first min-width breakpoints; 4. Use Flexbox or CSSGrid to achieve flexible and responsive layouts; 5. Use max-width:100% and background-size:cover to adapt the image and media container; 6. Use browser developer tools and real device testing to ensure cross-device compatibility. Combining these methods can make the website display and run well on all devices.
- CSS Tutorial . Web Front-end 326 2025-07-30 04:37:21
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- CSS scroll-snap tutorial
- CSSScrollSnap can achieve scroll adsorption effect by setting the scroll-snap attributes of containers and sub-elements. 1. The container needs to define scroll-snap-type, specify the scroll direction (x/y) and adsorption type (mandatory/proximity); 2. The child elements need to set scroll-snap-align, define the alignment (start/end/center); 3. It is necessary to ensure that the container has overflow scrolling and the child elements are clear in size; 4. It is recommended to use scroll-behavior:smooth to achieve smooth scrolling; 5. Pay attention to avoid direct use on the body, and consider mobile compatibility.
- CSS Tutorial . Web Front-end 512 2025-07-30 03:01:31
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- CSS clamp() function tutorial
- clamp()inCSSenablesresponsivedesignbysettingavaluethatadjustsbetweenaminimumandmaximumusingapreferredscalingvalue.1.Itfollowsthesyntaxclamp(minimum,preferred,maximum),wherethebrowserusestheminimumifthepreferredistoosmall,themaximumiftoolarge,andthepr
- CSS Tutorial . Web Front-end 278 2025-07-30 02:56:11
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- css print stylesheet example
- Print style sheets can be introduced through link tags or media queries, and it is recommended to use @mediaprint inline maintenance; 2. Common optimizations include: hiding non-essential elements such as navigation and sidebars; using visibility to control the printing area; adjusting fonts and rows to improve readability; ensuring that the picture table does not break across pages; adding URL addresses to the links; avoiding pagination breakpoints appearing in front of the title or list; 3. Actual skills include: avoiding dependence on background colors, controlling pagination with page-break-before, and using print preview to test the effect; 4. By setting the .print-content class for the content area and matching the CSSvisibility rules, you can only print the body content, thereby significantly improving
- CSS Tutorial . Web Front-end 177 2025-07-30 02:54:10
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- How to make text bold in CSS
- To make web page text thicker, the most direct way is to use the font-weight attribute of CSS; 1. Basic writing methods such as p{font-weight:bold;} can make paragraph text bold; 2. This attribute supports keywords (such as normal, bold) and numerical values (such as 400 means normal, 700 means bold); 3. Use class names combined with HTML elements to achieve boldness of specific text, improving style reusability and code maintenance; 4. Note that not all fonts support multiple thickness settings, and some fonts such as handwritten fonts may only support fixed thickness, and compatibility needs to be confirmed through developer tools or font documents. Mastering font-weight can effectively enhance the visual hierarchy and reading experience of web pages.
- CSS Tutorial . Web Front-end 859 2025-07-30 02:13:30
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- How to create a sticky footer?
- To create a sticky footer, you should use modern CSS methods. 1. When using Flexbox, set the container to display:flex and set flex-direction:column and min-height:100vh, and set flex:1 for the main element to spread the remaining space; 2. Or use CSSGrid, set the container to display:grid, define grid-template-rows:auto1frauto, so that the main content area occupies the available space, and the footer is naturally located at the bottom; avoid using old technologies such as absolute positioning or negative margins, ensure that the default style is reset and the layout gap is eliminated, and finally the footer is pasted for a short time when the content is in the bottom.
- CSS Tutorial . Web Front-end 391 2025-07-30 02:07:20
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- What is BEM methodology in CSS
- BEMisaCSSnamingconventionthatimprovescodereadability,maintainability,andscalability.1.Blockrepresentsstandalone,reusablecomponentslikebuttonsorheaders.2.Elementisapartofablockthatcannotbeusedindependentlysuchasamenuiteminsideanavigationblock.3.Modifi
- CSS Tutorial . Web Front-end 250 2025-07-30 02:07:01
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- What is the CSS :has() pseudo-class?
- :has() is a CSS selector that allows the selection of parent elements based on child elements, solving the problem that the parent elements cannot be styled directly based on child elements in the past. 1. It is implemented through parent:has(child) syntax, for example, section:has(h2) can add styles to sections containing h2; 2. Support complex selectors and combination characters, such as a:has(img) or p:has(h3); 3. Multiple conditions can be used in article:has(.featured,.highlight); 4. Browser support includes Chrome105, Edge105, Safari15.4, Firefox is gradually starting
- CSS Tutorial . Web Front-end 939 2025-07-30 01:49:40
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- Explain CSS transitions vs animations
- CSSTransition is suitable for simple property changes, while Animation is suitable for complex multi-step animations. 1. Transition focuses on smooth changes between two states, suitable for interactions such as button hovering and state switching, and can only control the start and end states; 2. Animation defines multiple keyframes through @keyframes, which can realize complex animations such as rotation and loading, and supports advanced controls such as loops, pauses, and reverse playback; 3. The selection basis is the complexity of demand: Transition is used for simple changes, and Animation is used for multi-stage or loop animation, and the two can also be used in combination.
- CSS Tutorial . Web Front-end 361 2025-07-30 01:46:20
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- What is the CSS box model?
- TheCSSboxmodeldeterminesanelement'ssizeandspacingthroughfourlayers:1.Content–theinnermostareadefinedbywidthandheight;2.Padding–transparentspaceinsidetheborder;3.Border–thelinesurroundingcontentandpadding;4.Margin–transparentspaceoutsidethebordersepar
- CSS Tutorial . Web Front-end 694 2025-07-30 01:41:21
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