html{height:100%}body{height:100%;font:100% Helvetica,sans-serif;color:#000;margin:0;display:flex;flex-direction:column}#board{flex:1;min-width:0;min-height:0;margin-bottom:3em}#footer{height:3em;align-items:center;display:flex;justify-content:center}#footer span{margin:0 10px}#info{text-align:center;justify-content:space-between;padding:10px 0;width:100%}#info button{height:30px;padding:0}#info span,#info button{margin:0 1px}#canvas{background:#fff;width:0;height:0;margin:0 auto;display:block}