*{margin:0;padding:0;}
body, html{width:100%;height: 100%;}
    .header{
        width: 100%;
        height: 50px;
        background: #ddd;
    }
    .menu_btn{
        text-align: right;
        padding: 10px;
    }
    .menu_bg{
        width: 100%;
        height: 100%;
        background: rgba(0,0,0,0.7);
        position: absolute;
        top:0;
        display: none;
    }
    .sidebar_menu{
        display: none;
        width: 100%;
        height: 100%;
		min-height:100%;
		overflow:hidden !important; 
		touch-action:none;
        background: #fff;
        position: absolute;
        top:0;
        right: -50%;
		z-index:9999;
        
    }
    .close_btn{
        width: 25px;
        height: 25px;
        margin:10px;
    }
    .close_btn > a{
        display: block;
        width: 100%;
        height: 100%;
    }
    .menu_wrap{
        list-style: none;
        padding: 20px 20px;   
    }
    .menu_wrap li a{
        color: #fff;
        text-decoration: none;
    }