*{margin:0;padding:0}html,body{overflow:hidden;user-select:none}.webgl{position:fixed;top:0;left:0;outline:none}.overlay{width:100%;height:100vh;position:fixed;top:0;left:0;background-color:#0c0c0c;display:flex;align-items:center;justify-content:center}.overlay h2{color:#fff;position:relative;top:-8rem;font-size:45px}.startBtn{width:12rem;height:5rem;background:none;border:5px solid white;color:#fff;font-size:3rem;position:absolute;left:50%;top:50%;transform:translate(-50%,-50%);border-radius:4px;cursor:pointer;transition:.1s ease;font-family:Verdana,Geneva,Tahoma,sans-serif;letter-spacing:4px}.startBtn:hover{background-color:#fff;color:#000}