* { box-sizing: border-box; } body {margin: 0;}.c1623{opacity:0;position:absolute;z-index:-1;}.c1683{opacity:0;position:absolute;z-index:-1;}.c2910{position:absolute;top:10px;right:20px;font-weight:bold;font-size:24px;cursor:pointer;}.c3013{width:100%;height:400px;border:none;border-radius:0px;margin-top:20px;}.c2883{display:none;position:fixed;top:0;left:0;width:100%;height:100%;background-color:rgba(0,0,0,0.5);z-index:9999;}