background-size兼容IE8解决方案

body {
background: url() no-repeat center;
-webkit-background-size: cover;
-moz-background-size: cover;
-o-background-size: cover;
background-size: cover;
filter: progid: DXImageTransform.Microsoft.AlphaImageLoader( src='', sizingMethod='scale');
-ms-filter: progid: DXImageTransform.Microsoft.AlphaImageLoader( src='', sizingMethod='scale');
}

you can use this file (https://github.com/louisremi/background-size-polyfill “background-size polyfill”) for IE8 that is really simple to use:

.selector {
background-size: cover;
-ms-behavior: url(/backgroundsize.min.htc);
}