padding 的值，不能为负数。
使用 absolute 后，在定义好 width 和 height ，使用 border 的 width 和 height 会变大、变宽。
设置好看的细线
.thinBorder:after{
content: '';
width: 100%;
display: block;
border-top: 1px solid #ccc;
position: absolute;
left: 0;
bottom: 0px;
-webkit-transform: scaleY(0.5);
-webkit-transform-origin: 0% 0%;
}
What is the root tag in an HTML document?Apr 29, 2025 am 12:10 AMTheroottaginanHTMLdocumentis.Itservesasthetop-levelelementthatencapsulatesallothercontent,ensuringproperdocumentstructureandbrowserparsing.
Are the HTML tags and elements the same thing?Apr 28, 2025 pm 05:44 PMThe article explains that HTML tags are syntax markers used to define elements, while elements are complete units including tags and content. They work together to structure webpages.Character count: 159
What is the significance of <head> and <body> tag in HTML?Apr 28, 2025 pm 05:43 PMThe article discusses the roles of <head> and <body> tags in HTML, their impact on user experience, and SEO implications. Proper structuring enhances website functionality and search engine optimization.
What is the difference between <strong>, <b> tags and <em>, <i> tags?Apr 28, 2025 pm 05:42 PMThe article discusses the differences between HTML tags , , , and , focusing on their semantic vs. presentational uses and their impact on SEO and accessibility.
Please explain how to indicate the character set being used by a document in HTML?Apr 28, 2025 pm 05:41 PMArticle discusses specifying character encoding in HTML, focusing on UTF-8. Main issue: ensuring correct display of text, preventing garbled characters, and enhancing SEO and accessibility.
What are the various formatting tags in HTML?Apr 28, 2025 pm 05:39 PMThe article discusses various HTML formatting tags used for structuring and styling web content, emphasizing their effects on text appearance and the importance of semantic tags for accessibility and SEO.
What is the difference between the 'id' attribute and the 'class' attribute of HTML elements?Apr 28, 2025 pm 05:39 PMThe article discusses the differences between HTML's 'id' and 'class' attributes, focusing on their uniqueness, purpose, CSS syntax, and specificity. It explains how their use impacts webpage styling and functionality, and provides best practices for
What is the 'class' attribute in HTML?Apr 28, 2025 pm 05:37 PMThe article explains the HTML 'class' attribute's role in grouping elements for styling and JavaScript manipulation, contrasting it with the unique 'id' attribute.
Hot AI Tools
Undresser.AI Undress
AI-powered app for creating realistic nude photos
AI Clothes Remover
Online AI tool for removing clothes from photos.
Undress AI Tool
Undress images for free
Clothoff.io
AI clothes remover
Video Face Swap
Swap faces in any video effortlessly with our completely free AI face swap tool!
Hot Article
Hot Tools
Zend Studio 13.0.1
Powerful PHP integrated development environment
WebStorm Mac version
Useful JavaScript development tools
SAP NetWeaver Server Adapter for Eclipse
Integrate Eclipse with SAP NetWeaver application server.
Safe Exam Browser
Safe Exam Browser is a secure browser environment for taking online exams securely. This software turns any computer into a secure workstation. It controls access to any utility and prevents students from using unauthorized resources.
mPDF
mPDF is a PHP library that can generate PDF files from UTF-8 encoded HTML. The original author, Ian Back, wrote mPDF to output PDF files "on the fly" from his website and handle different languages. It is slower than original scripts like HTML2FPDF and produces larger files when using Unicode fonts, but supports CSS styles etc. and has a lot of enhancements. Supports almost all languages, including RTL (Arabic and Hebrew) and CJK (Chinese, Japanese and Korean). Supports nested block-level elements (such as P, DIV),
