/*提示框*/
.msg_tip {
	position: fixed;
	width: 20%;
	left: 40%;
	top: 40%;
	text-align: center;
	background-color: rgba(0,0,0,.6);
	color: #fff;
	border: 2px #eee solid;
	border-radius: 10px;
	z-index: 999999;
}
.msg_tip .title {
	margin: 50px auto
}
.hide{display:none}
*{ margin:0; padding:0}
ul li{ list-style:none}
.bg_fixed{ position:fixed; width:50%; height:500px; overflow-y:scroll; top:50%; left:50%; margin:-250px 0 0 -25%; background:#fff; opacity:1; z-index:9999; border:1px solid #ccc;}
.bg_fixed:after{ position:fixed; width:100%; height:100%; top:0; left:0; background-color:#000; opacity:1; z-index:-99}