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- How to create a nested, multi-level list in HTML
- Creating nested multi-layer HTML lists requires nesting or within elements; 2. A mix of ordered and unordered lists can be used to distinguish styles at different levels; 3. Maintain code indentation to improve readability and avoid deep nesting over 3-4 layers; 4. Control margins, inner margins and list marking styles through CSS to enhance visual hierarchy. Correct nesting and structured properly ensures that the list is semantics are clear and easy to maintain.
- HTML Tutorial . Web Front-end 708 2025-08-03 12:36:02
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- How to structure tables with thead, tbody, and tfoot in HTML
- Use head, tbody and tfoot to improve the semantics, accessibility and style control of HTML tables; 1. Structurally, it should be written in the order of head, tfoot, and tbody, although tfoot is displayed at the bottom; 2. Advantages include enhanced semantics, assistive technology recognition, independent style settings, printing and pagination support and JavaScript operation convenience; 3. Each part of the style can be set separately through CSS, and the table header and table tail can be fixed scrolled in combination with display:table and overflow; 4. Note that each table has only one head and tfoot, multiple tbody can be used for data grouping, th is used for head, all tr must be located in these containers, and cannot be straightforward.
- HTML Tutorial . Web Front-end 851 2025-08-03 12:12:02
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- When to use vs ?
- Use“vs.”ininformal,casual,orspace-limitedcontextslikesports,headlines,orsocialmedia.2.Use“versus”informal,legal,oracademicwritingforcorrectnessandprofessionalism.3.Donotconfuse“vs.”with“and,”as“vs.”impliescontrastwhile“and”indicatescombination.Whenin
- HTML Tutorial . Web Front-end 687 2025-08-03 12:06:12
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- How to make an HTML5 video autoplay on page load
- To make HTML5 videos automatically play when the page loads, you must use the autoplay and muted properties, as modern browsers usually prevent automatic playback with sound. 1. Add the autoplay attribute to enable automatic playback; 2. Muted attribute must be added at the same time to meet the browser's mute requirements; 3. It is recommended to add the playsinline attribute to ensure normal inline playback on iOS devices; 4. Add the controls attribute to allow users to manually control playback, volume and mute; 5. Use the .mp4 (H.264) format to ensure the widest compatibility; 6. Control the video file size to avoid loading delays. The complete and reliable writing method is: This can be implemented on most desktop and mobile devices
- HTML Tutorial . Web Front-end 656 2025-08-03 12:00:04
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- How to create tables in HTML for data
- To create HTML tables, you need to build a basic structure using,,, and tags, where you define a table container, define rows, define data cells, and define header cells; 1. Use, and improve structure semantics and accessibility; 2. Add borders, collapsed borders, inner margins and text alignment through CSS to improve appearance; 3. Follow best practices, such as for data presentation only, not layout, use headers, ensure responsive design, and add scope attributes to complex headers, thereby creating clear and easy-to-use tables.
- HTML Tutorial . Web Front-end 493 2025-08-03 11:41:02
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- HTML `alt` Attribute for Images: Accessibility and SEO
- The alt attribute is crucial for accessibility and SEO. 1. For accessibility, visually impaired users rely on screen readers to obtain picture information. Clear alt descriptions such as "red high heels" are better than blurred content or file names. Decorative pictures should be empty alts to avoid interference. 2. For SEO, alt text helps search engines understand the content of the picture and needs to naturally incorporate keywords, such as "female red high heels, suitable for dinner outfits", to avoid pile up keywords. 3. Common errors include using file names to act as alt, descriptions are blurred, duplicate content, and not updating dynamic picture alt, which affects the experience and optimization effect. Each time you insert a picture, check whether the alt accurately reflects the information, improve user experience and enhance website exposure.
- HTML Tutorial . Web Front-end 417 2025-08-03 11:16:02
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- How to handle bidirectional text with the HTML bdi element
- Addresses the correct display of dynamic content in a mixed text orientation environment, which ensures punctuation and neutral characters are rendered correctly by automatically detecting and isolating text in unknown directions. 1. When embedding text with unknown directions in documents with known directions (such as Arabic username in English page), the browser's Unicode bidirectional algorithm may misalign text; 2. Elements enable the browser to automatically judge the internal text direction and isolate it from surrounding content; 3. Applicable to user-generated content, dynamic data and multilingual interfaces; 4. Unlike the dir attributes that require predicting the direction, it has intelligent detection capabilities; 5. All modern browsers support it, IE does not support it but can be processed through a downgrade solution. Therefore, when displaying multilingual content that is not written by yourself, you should use
- HTML Tutorial . Web Front-end 263 2025-08-03 11:11:02
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- What is the async attribute on the HTML script tag
- Theasyncattributeallowsnon-blockingscriptloading,meaningthebrowserdownloadsthescriptasynchronouslywithoutblockingHTMLparsing;oncedownloaded,thescriptexecutesimmediately,potentiallypausingparsingforexecution.1.Useasyncforscriptsthatdon’tdependontheDOM
- HTML Tutorial . Web Front-end 977 2025-08-03 11:09:03
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- Using HTML `input` Types for User Data
- Choosing the right HTMLinput type can improve data accuracy, enhance user experience, and improve usability. 1. Select the corresponding input types according to the data type, such as text, email, tel, number and date, which can automatically checksum and adapt to the keyboard; 2. Use HTML5 to add new types such as url, color, range and search, which can provide a more intuitive interaction method; 3. Use placeholder and required attributes to improve the efficiency and accuracy of form filling, but it should be noted that placeholder cannot replace label.
- HTML Tutorial . Web Front-end 179 2025-08-03 11:07:01
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- How to use the HTML br tag for line breaks
- TheHTMLtagisusedtoinsertalinebreakwithoutstartinganewparagraph.2.Itisidealforpoetry,addresses,andshortmulti-linetextwherelinestructurematters.3.Thetagisself-closingandwrittenasinHTML5orinXHTML.4.Avoidoverusingitforspacing;instead,useCSSmarginorpaddin
- HTML Tutorial . Web Front-end 152 2025-08-03 10:19:01
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- How to define an abbreviation or acronym with the tag in HTML
- Use tags in HTML to define abbreviations or acronyms, 1. Wrap abbreviations with tags; 2. Use title attributes to provide full extensions; 3. Enhance visual cues through CSS; 4. Ensure that title attributes are included for accessibility; 5. Applicable to all abbreviations and acronyms, which ensures that content is more friendly to screen readers and users and is semantic.
- HTML Tutorial . Web Front-end 833 2025-08-03 08:59:02
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- How to use the HTML style attribute for inline CSS
- Use the style attribute to apply inline CSS directly on HTML elements, which is suitable for quick style settings or dynamic overwriting styles, but for easy maintenance, it is usually recommended to place CSS in external files or tags. 1. Basic syntax: add style attributes to elements, write CSS declarations in the form of property:value, and multiple declarations are separated by semicolons without braces; 2. Common use cases include setting text color, background color, font, spacing and layout, etc.; 3. The usage scenario is single-shot, JavaScript dynamic generation or temporary overwriting style; 4. Avoid using multiple elements, large projects, or when you need to separate structure and presentation; 5. Inline styles have high priority and will overwrite external style rules; 6. Use skills packages
- HTML Tutorial . Web Front-end 416 2025-08-03 08:25:02
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- How to create a client-side image map in HTML
- Use the usemap attribute to associate the image with the image map; 2. Define the map elements whose name attribute matches the usemap; 3. Use the area tag in the map to create a rectangle, circle or polygon clickable area, and set shape, coords, href and alt attributes; 4. The coordinates are based on the pixel position in the upper left corner of the image, and it is recommended to use tools to obtain and test the area; 5. Add alt and title attributes for each area to improve accessibility and user experience; client image mapping does not require JavaScript or server processing, and modern browsers support it, which is simple to maintain and efficient in performance.
- HTML Tutorial . Web Front-end 462 2025-08-03 07:54:02
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- How to debug common HTML errors
- FiximproperlynestedorunclosedtagsbyensuringcorrecttagorderandusingtoolsliketheW3Cvalidator;2.Addrequiredattributessuchasaltforimagesandtypeforbuttonstoensurefunctionalityandaccessibility;3.VerifyproperdocumentstructurewithacorrectDOCTYPE,charset,lang
- HTML Tutorial . Web Front-end 198 2025-08-03 06:12:02
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