分享让网页背景图片在任意分辨率屏幕都能平铺的方法
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posted @ 2014年8月17日 16:39
in Html5
, 3851 阅读
看到了一篇很好的文章"Perfect Full Page Background Image".文中总结了多种让图片铺满整个屏幕的方法,不论屏幕的分辨率是多少。有用纯CSS实现的, 也有用 JQuery实现的,各种方法都提供了示例。
个人喜欢由Corey Worrell提供的纯CSS方法。这里没有直接用background-image,而是直接用的foreground image作为背景图。html部分如下:
<div id="bg"> <img src="images/bg.jpg" alt="background image"> </div>
css部分:
#bg { position: fixed; top: -50%; left: -50%; width: 200%; height: 200%; } #bg img { position: absolute; top: 0; left: 0; right: 0; bottom: 0; margin: auto; /* preserve aspet ratio */ min-width: 50%; min-height: 50%; }
思路是先创建一个<div id="bg">,这个div的大小是窗口大小的两倍,位置是fixed,起始坐标为top:-50%; left:-50%;。然后把图片的位置设为top:0; left: 0; 再设置minm-width和min-height属性来保证图片大小不小于div的50%。由于这个div的大小是窗口的两倍,这样图片的大小就正好与窗口大小一样,并且是centered。
2018年5月29日 04:08
思路是先创建一个<div id="bg">,这个div的大小是窗口大小的两倍,位置是fixed,起始坐标为top:-50%; left:-50%;。
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