.bg{background: #fff; opacity: 0.7; -moz-opacity: .7; filter: alpha(opacity=70); width: 100%; height: 145px;}
.bg{background: #fff; opacity: 0.7; -moz-opacity: .7; filter: alpha(opacity=70); width: 100%; height: 145px;}
转载于:https://www.cnblogs.com/shimily/articles/9667931.html