body{display:flex;justify-content:center;flex-direction:column;align-items:center}body .container{position:relative;top:20%;left:-10%}body .container canvas{margin:4px;position:absolute}body div.control-panel{display:flex;flex-direction:column;justify-content:center;align-items:center}body div.control-panel *{margin-bottom:.1rem}