1. IE8 图片平铺滤镜

background: url("../../images/home/start.png") no-repeat 0 0 transparent;

/* 滤镜只支持平铺100%不支持指定大小 */
filter: progid:DXImageTransform.Microsoft.AlphaImageLoader(src='../../images/home/start.png', sizingMethod='image');