.containers{position:absolute;background-color:#fff;width:100%;height:90%}.canvas{width:100%;height:100%}.panel{right:0;top:0;width:300px}.buttons,.panel{position:absolute}.buttons{left:20px;bottom:20px}.buttons>li{display:inline-block;margin:5px}.buttons>li>a{color:#999;background:#eee;cursor:not-allowed;padding:8px;border:1px solid #ccc}.buttons>li>a.active{color:#333;background:#fff;cursor:pointer}