CSS3IE9背景大小：封面;并不总是有效-CSS3IE9background-size:cover;doesn'talwayswork

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some IE9 browsers are handling this and some IE9 browsers are not.

一些IE9浏览器正在处理这个,而一些IE9浏览器则没有。

Please make sure your Browser Mode and Document Mode is IE 9. Using F12 developer tools.

请确保您的浏览器模式和文档模式是IE 9.使用F12开发人员工具。

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I have the same problem and i fix it with this declaration in the :

我有同样的问题,我在中使用此声明修复它:

.

。

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I know its old, but i had this problem today and it was killing me too.. but i found a solution:

我知道它的旧,但我今天遇到了这个问题,它也杀了我..但我找到了一个解决方案:

Check if you have the tag in your first line, if you forget that it can make your css3 looks real bad on IE9.

检查你的第一行是否有标签,如果你忘记它可以使你的css3在IE9上看起来很糟糕。

Thanks!

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That worked!!!

Putting as the first line resolved the IE 9 problem (worked before OK with Chrome and IE 10). You can see the result of the following code on my page at http://www.cgmdesign.net (background photo is mine).

将作为第一行解决了IE 9问题(在使用Chrome和IE 10之前正常工作)。您可以在我的页面上看到以下代码的结果:http://www.cgmdesign.net(背景照片是我的)。