#grid-outer{border:solid 2px grey;border-radius:5px;padding:6px;height:416px;width:416px;position:relative}#tile{height:400px;width:400px;padding:5px;background-repeat:no-repeat;background-size:100% 100%}#canvas{height:400px;width:400px;left:6px;top:6px;position:absolute;border:solid 1px black}.square{height:20px;width:20px;position:absolute;border:solid 1px black}