.mask{height:100%; width:100%; position:fixed; _position:absolute; top:0; z-index:1000; } .opacity{ opacity:0.3; filter: alpha(opacity=30); background-color:#000; }
遮罩层的实现,布布扣,bubuko.com
遮罩层的实现
原文：http://www.cnblogs.com/mengxingxinqing/p/3903664.html
