body,html{overflow:hidden}body{background:#3C3C3C;margin:0}#ctn{height:auto;height:100%;margin:10px auto;position:relative;border:3px solid #8d8d8d;border-radius:15px;box-shadow:0 0 100px #000 inset}canvas{position:absolute;top:0;left:0;width:100%}#vacuum{width:auto;top:auto;left:auto;right:5px;bottom:5px}