*{margin:0;}
canvas{background:#ddd;}
#picked span{
  display:inline-block;
  width:50px;
  height:50px;
  margin:3px;
  text-align:center;
  text-shadow:1px 1px 1px #000;
  font:8px/50px Arial;
  color:#fff;
}

body {
  margin:3%;
}

div {
  margin: 2%;
}