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                # Background-size **版本:CSS3** 繼承性:無 ### 語法: **background-size** :[ *<length>* | *<percentage>* | auto ]{1,2} | cover | contain **相關屬性**: [background-clip](#) | [background-origin](#) ### 取值: *<length>*:由浮點數字和單位標識符組成的長度值。不可為負值。 *<percentage>*:取值為0%到100%之間的值。不可為負值。 ### 說明: 設置背景圖片的大小。 指定背景大小,以象素或百分比顯示。當指定為百分比時,大小會由所在區域的寬度、高度,以及background-origin的位置決定。還可以通過cover和contain來對圖片進行伸縮。 | 引擎類型 | Gecko | Webkit | Presto | |-----|-----|-----|-----| | Background-size | | -webkit-background-size | -o-background-size | | | | | | ### 兼容性: <table><thead><tr><th class="type">類型</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; ">這里的 <code>background-size: 100% 80px</code>。 背景圖片將與DIV一樣寬,高為80px。</div></body></html> 復制代碼 Copyright ? 2009 [Tencent ISD webteam](http://webteam.tencent.com/). All Rights Reserved ### 快速跳轉 - [語法](# "跳轉到“語法”") - [取值](# "跳轉到“取值”") - [說明](# "跳轉到“說明”") - [兼容性](# "跳轉到“兼容性”") - [示例](# "跳轉到“示例”")
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