*{
    margin: 0;
    padding: 0;
}
body{

}
.con{
    position: absolute;
    z-index: 0;
    top: 105px;
    margin-top: -25px;
    left: 560px;
    margin-left: -195px;
}
button{
	width: 30px;
	height: 30px;
	float: left;
	border: 0;
}
.leftNav span{
	display: inline-block;
	width: 93%;
	height: 50px;
	margin-left: 5%;
	line-height: 50px;
	text-align: left;
}
.leftNav span a{
	color: #FF0000;
	font-family: "Microsoft YaHei UI";
	font-weight: bolder;
	text-decoration: none;
	}
span:hover{
    background-color: #f5f5f5;
}

.bgDiv{
    width: 100%;
    height: 100%;
    background-color: #000;
    opacity: .5;
    position:fixed;
    display: none;
    z-index: 99;
    bottom: 0;
}
.leftNav{
    width: 50%;
    max-width: 400px;
    height: 100%;
    background-color: #fff;
    position: fixed;
    z-index: 999;
    top: 0;
    left: -50%;
}
.rightNav{
    width: 50%;
    max-width: 400px;
    height: 100%;
    background-color: #fff;
    position: fixed;
    z-index: 999;
    top: 0;
    right: -50%;
}
.upNav{
   width: 100%;
    height: 40%;
    background-color: #fff;
    position: fixed;
    z-index: 999;
    top: -40%;
}
.downNav{
    width: 100%;
    height: 40%;
    background-color: #fff;
    position: fixed;
    z-index: 999;
    bottom: -40%;
}