body,html{margin:0;padding:0;overflow:hidden;height:100%;width:100%;position:relative}body{display:flex;align-items:center;justify-content:center}*{box-sizing:border-box}.controls{padding:10px;background:hsla(0,0%,100%,.8);color:#000;position:absolute;bottom:0;right:0;width:100%;display:flex;justify-content:center}.controls .button{width:1.5em;height:1.5em;margin:0 20px}