background-size 兼容ie8以下浏览器的方法

 

 

 

filter: progid:DXImageTransform.Microsoft.AlphaImageLoader(src='imgs/section-1.png', sizingMethod='scale');
    -ms-filter:"progid:DXImageTransform.Microsoft.AlphaImageLoader(src='imgs/section-1.png', sizingMethod='scale')";