Background-size · CSS 3.0参考手册.chm

# Background-size **版本：CSS3** 继承性：无 ### 语法： **background-size** ：[ *<length>* | *<percentage>* | auto ]{1,2} | cover | contain **相关属性**： [background-clip](#) | [background-origin](#) ### 取值： *<length>*：由浮点数字和单位标识符组成的长度值。不可为负值。 *<percentage>*：取值为0%到100%之间的值。不可为负值。 ### 说明：设置背景图片的大小。指定背景大小，以象素或百分比显示。当指定为百分比时，大小会由所在区域的宽度、高度，以及background-origin的位置决定。还可以通过cover和contain来对图片进行伸缩。 | 引擎类型 | Gecko | Webkit | Presto | |-----|-----|-----|-----| | Background-size | | -webkit-background-size | -o-background-size | | | | | | ### 兼容性： <table><thead><tr><th class="type">类型</th> <th class="type_ie"><img src="https://box.kancloud.cn/2015-09-02_55e5d384e85bb.png" alt="IE" />Internet Explorer</th> <th class="type_firefox"><img src="https://box.kancloud.cn/2015-09-02_55e5d384f12e9.png" alt="Firefox" />Firefox</th> <th class="type_chrome"><img src="https://box.kancloud.cn/2015-09-02_55e5d385049a2.png" alt="Chrome" />Chrome</th> <th class="type_opera"><img src="https://box.kancloud.cn/2015-09-02_55e5d3850e166.png" alt="Opera" />Opera</th> <th class="type_safari"><img src="https://box.kancloud.cn/2015-09-02_55e5d38515800.png" alt="Safari" />Safari</th> </tr></thead><tbody><tr><td rowspan="4" class="version">版本</td> <td class="support no"><span>(×)</span>IE6</td> <td class="support no"><span>(×)</span>Firefox 2.0</td> <td class="support yes"><span>(√)</span>Chrome 1.0.x</td> <td class="support yes"><span>(√)</span>Opera 9.63</td> <td class="support yes"><span>(√)</span>Safari 3.1</td> </tr><tr><td class="support no"><span>(×)</span>IE7</td> <td class="support no"><span>(×)</span>Firefox 3.0</td> <td class="support yes"><span>(√)</span>Chrome 2.0.x</td> <td></td> <td class="support yes"><span>(√)</span>Safari 4</td> </tr><tr><td class="support no"><span>(×)</span>IE8</td> <td class="support no"><span>(×)</span>Firefox 3.5</td> <td></td> <td></td> <td></td> </tr><tr><td></td> <td></td> <td></td> <td></td> <td></td> </tr></tbody></table> ### 示例： ![](https://box.kancloud.cn/2015-09-02_55e5d3851e23a.png) <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd"><html xmlns="http://www.w3.org/1999/xhtml"><head><meta http-equiv="Content-Type" content="text/html; charset=utf-8" /><meta http-equiv="Content-Language" content="utf-8" /><meta name="robots" content="all" /><meta name="author" content="Tencent-ISRD" /><meta name="Copyright" content="Tencent" /><title>Background-size</title></head><body><div style="border: 1px solid #CCCCCC; padding:90px 5px 10px; background:url(http://webteam.tencent.com/wp-content/themes/teamblog/img/gg.png) no-repeat ; -webkit-background-size: 100% 80px; -o-background-size: 100% 80px; ">这里的 <code>background-size: 100% 80px</code>。背景图片将与DIV一样宽，高为80px。</div></body></html> 复制代码 Copyright © 2009 [Tencent ISD webteam](http://webteam.tencent.com/). All Rights Reserved ### 快速跳转 - [语法](# "跳转到“语法”") - [取值](# "跳转到“取值”") - [说明](# "跳转到“说明”") - [兼容性](# "跳转到“兼容性”") - [示例](# "跳转到“示例”")