继承写法:父元素:z-index:1000; backgroung-color:black; opacity:0.5;
不继承: background-color: rgba(0,0,0,0.6)!important;
background-color: #000;
filter:Alpha(opacity=60);
或者: .opacity{background: #000;opacity:0.7}
不继承: background-color: rgba(0,0,0,0.6)!important;
background-color: #000;
filter:Alpha(opacity=60);
或者: .opacity{background: #000;opacity:0.7}