html,body,div,main,img,ul,ol,li,table,tr,td,header,nav,footer,aside{
    position: relative;
}
body{
    width: 100%;
    font-family: "Microsoft YaHei", sans-serif;
    font-size: 13px;
    color: #333333;
    margin: 0;
    background-color:#ffffff;
}
a,a:hover,a:focus,a:link{ text-decoration:none}
.bc{
    z-index: -1;
}
.all{
    width: 100%;
	height:auto;
	margin:0;
}
.undis{
    display:none;
}
.left{
    float: left;
}
.right{
    float: right;
}
.clear{
    clear: both;
}
.clearfix:after{
    content: "";
    clear: both;
}
.login li{
    list-style: none;
}
li{
    list-style:none;
}