在css中，可以使用background-size属性让背景图拉伸，只需要给元素设置“background-size:100% 100%;”样式即可。该属性可以以父元素的百分比来设置背景图像的宽度和高度。
本教程操作环境：windows7系统、CSS3&&HTML5版、Dell G3电脑。
background-size 属性规定背景图像的尺寸。
语法
background-size: length|percentage|cover|contain;
实例：
<!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>效果
推荐学习：css视频教程
The above is the detailed content of How to stretch the background image in css. For more information, please follow other related articles on the PHP Chinese website!
What is CSS Grid?Apr 30, 2025 pm 03:21 PMCSS Grid is a powerful tool for creating complex, responsive web layouts. It simplifies design, improves accessibility, and offers more control than older methods.
What is CSS flexbox?Apr 30, 2025 pm 03:20 PMArticle discusses CSS Flexbox, a layout method for efficient alignment and distribution of space in responsive designs. It explains Flexbox usage, compares it with CSS Grid, and details browser support.
How can we make our website responsive using CSS?Apr 30, 2025 pm 03:19 PMThe article discusses techniques for creating responsive websites using CSS, including viewport meta tags, flexible grids, fluid media, media queries, and relative units. It also covers using CSS Grid and Flexbox together and recommends CSS framework
What does the CSS box-sizing property do?Apr 30, 2025 pm 03:18 PMThe article discusses the CSS box-sizing property, which controls how element dimensions are calculated. It explains values like content-box, border-box, and padding-box, and their impact on layout design and form alignment.
How can we animate using CSS?Apr 30, 2025 pm 03:17 PMArticle discusses creating animations using CSS, key properties, and combining with JavaScript. Main issue is browser compatibility.
Can we add 3D transformations to our project using CSS?Apr 30, 2025 pm 03:16 PMArticle discusses using CSS for 3D transformations, key properties, browser compatibility, and performance considerations for web projects.(Character count: 159)
How can we add gradients in CSS?Apr 30, 2025 pm 03:15 PMThe article discusses using CSS gradients (linear, radial, repeating) to enhance website visuals, adding depth, focus, and modern aesthetics.
What are pseudo-elements in CSS?Apr 30, 2025 pm 03:14 PMArticle discusses pseudo-elements in CSS, their use in enhancing HTML styling, and differences from pseudo-classes. Provides practical examples.
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
PhpStorm Mac version
The latest (2018.2.1) professional PHP integrated development tool
EditPlus Chinese cracked version
Small size, syntax highlighting, does not support code prompt function
Atom editor mac version download
The most popular open source editor
Dreamweaver CS6
Visual web development tools
MinGW - Minimalist GNU for Windows
This project is in the process of being migrated to osdn.net/projects/mingw, you can continue to follow us there. MinGW: A native Windows port of the GNU Compiler Collection (GCC), freely distributable import libraries and header files for building native Windows applications; includes extensions to the MSVC runtime to support C99 functionality. All MinGW software can run on 64-bit Windows platforms.
