css background-size 属性_html/css_WEB-ITnose
The background-size attribute specifies the size of the background image.
Syntax
background-size: length|percentage|cover|contain;
length sets the height and width of the background image.
The first value sets the width and the second value sets the height.
If only one value is set, the second value will be set to "auto".
percentage sets the width and height of the background image as a percentage of the parent element. The first value sets the width and the second value sets the height. If only one value is set, the second value will be set to "auto".
cover Expands the background image to be large enough so that the background image completely covers the background area. Some parts of the background image may not be displayed in the background anchor area.
contain Expands the image image to its maximum size so that its width and height fit completely within the content area.
Default value: auto
Inheritance: no
Version: CSS3
JavaScript syntax: object.style.backgroundSize="60px 80px"
IE9, Firefox 4, Opera, Chrome, and Safari 5 support the background-size attribute.
Example 1:
<!DOCTYPE html><html><head><style> div{background:url(/i/bg_flower.gif);background-size:35% 100%;-moz-background-size:35% 100%; /* 老版本的 Firefox */background-repeat:no-repeat;}</style></head><body><div><p>这是一个段落。</p><p>这是一个段落。</p><p>这是一个段落。</p><p>这是一个段落。</p><p>这是一个段落。</p><p>这是一个段落。</p><p>这是一个段落。</p><p>这是一个段落。</p><p>这是一个段落。</p></div></body></html>
Example 2:
<!DOCTYPE html><html><head><style> div{background:url(/i/bg_flower.gif);background-size:25%;border:2px solid #92b901;}</style></head><body><div><p>这是一个段落。这是一个段落。这是一个段落。这是一个段落。这是一个段落。</p><p>这是一个段落。这是一个段落。这是一个段落。这是一个段落。这是一个段落。</p><p>这是一个段落。这是一个段落。这是一个段落。这是一个段落。这是一个段落。</p><p>这是一个段落。这是一个段落。这是一个段落。这是一个段落。这是一个段落。</p><p>这是一个段落。这是一个段落。这是一个段落。这是一个段落。这是一个段落。</p><p>这是一个段落。这是一个段落。这是一个段落。这是一个段落。这是一个段落。</p></div></body></html>
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
Notepad++7.3.1
Easy-to-use and free code editor
SublimeText3 Chinese version
Chinese version, very easy to use
Zend Studio 13.0.1
Powerful PHP integrated development environment
Dreamweaver CS6
Visual web development tools
SublimeText3 Mac version
God-level code editing software (SublimeText3)
Hot Topics
Is HTML easy to learn for beginners?
Apr 07, 2025 am 12:11 AM
HTML is suitable for beginners because it is simple and easy to learn and can quickly see results. 1) The learning curve of HTML is smooth and easy to get started. 2) Just master the basic tags to start creating web pages. 3) High flexibility and can be used in combination with CSS and JavaScript. 4) Rich learning resources and modern tools support the learning process.
The Roles of HTML, CSS, and JavaScript: Core Responsibilities
Apr 08, 2025 pm 07:05 PM
HTML defines the web structure, CSS is responsible for style and layout, and JavaScript gives dynamic interaction. The three perform their duties in web development and jointly build a colorful website.
What is an example of a starting tag in HTML?
Apr 06, 2025 am 12:04 AM
AnexampleofastartingtaginHTMLis,whichbeginsaparagraph.StartingtagsareessentialinHTMLastheyinitiateelements,definetheirtypes,andarecrucialforstructuringwebpagesandconstructingtheDOM.
Understanding HTML, CSS, and JavaScript: A Beginner's Guide
Apr 12, 2025 am 12:02 AM
WebdevelopmentreliesonHTML,CSS,andJavaScript:1)HTMLstructurescontent,2)CSSstylesit,and3)JavaScriptaddsinteractivity,formingthebasisofmodernwebexperiences.
Gitee Pages static website deployment failed: How to troubleshoot and resolve single file 404 errors?
Apr 04, 2025 pm 11:54 PM
GiteePages static website deployment failed: 404 error troubleshooting and resolution when using Gitee...
How to implement adaptive layout of Y-axis position in web annotation?
Apr 04, 2025 pm 11:30 PM
The Y-axis position adaptive algorithm for web annotation function This article will explore how to implement annotation functions similar to Word documents, especially how to deal with the interval between annotations...
HTML, CSS, and JavaScript: Essential Tools for Web Developers
Apr 09, 2025 am 12:12 AM
HTML, CSS and JavaScript are the three pillars of web development. 1. HTML defines the web page structure and uses tags such as, etc. 2. CSS controls the web page style, using selectors and attributes such as color, font-size, etc. 3. JavaScript realizes dynamic effects and interaction, through event monitoring and DOM operations.
How to use CSS3 and JavaScript to achieve the effect of scattering and enlarging the surrounding pictures after clicking?
Apr 05, 2025 am 06:15 AM
To achieve the effect of scattering and enlarging the surrounding images after clicking on the image, many web designs need to achieve an interactive effect: click on a certain image to make the surrounding...
