#layer-alert-mask{position:fixed;top:0;left:0;width:100%;height:100%;opacity:1;filter:alpha(opacity=100);background:url(../../../student/images/icon/overlay_dot.png) repeat 0 0;z-index:99}
#layer-alert-content{position:fixed;top:50%;left:50%;border-radius:3px;background:#fff;z-index:100}
#layer-alert-content .layer-alert-header{line-height:48px;height:48px;text-indent:20px;color:#333;font-size:16px;font-weight:700;background-color:#fff;border-bottom:1px solid #eee;border-top-left-radius:3px;border-top-right-radius:3px}
#layer-alert-content .layer-alert-header i{float:right;width:16px;height:16px;margin:15px;background:url(../../../student/images/icon/layer-top-X.png) no-repeat;cursor:pointer;-webkit-transition:all .5s ease;-moz-transition:all .5s ease;transition:all .5s ease}
#layer-alert-content .layer-alert-header i:hover{-webkit-transform:rotate(90deg);-moz-transform:rotate(90deg);transform:rotate(90deg)}