*{margin:0;padding:0}.webgl{outline:none;position:absolute;z-index:0}#settings{position:absolute;width:100vw;text-align:center;padding:0;z-index:1}#settings>button{background-color:gray;opacity:.7;box-shadow:0 0 .5em #000;padding:.1em .3em;border-radius:20px;font-size:4em;margin:10px;color:#fff}