.hidden{display:none}#container{text-align:center}#main-menu-container{position:absolute;left:0;top:0;width:100%;height:100%}#main-menu{background-color:white;color:black;margin-left:auto;margin-right:auto;height:480px}#main-menu .row{padding:2px}#main-menu button{width:220px;height:128px;font-family:inherit;font-size:100%;padding:.5em 1em;color:rgba(0,0,0,0.80);border:none rgba(0,0,0,0);background-color:#e8e8e8;text-decoration:none;border-radius:2px}#main-menu button:hover,#main-menu button:focus{background-image:linear-gradient(transparent,rgba(0,0,0,0.03) 50%,rgba(0,0,0,0.05))}#main-menu button.on,#main-menu button:active{background-color:#c5c5c5;box-shadow:0 0 0 1px rgba(0,0,0,0.45) inset,0 0 2px rgba(0,0,0,0.60) inset;border-color:rgba(0,0,0,0.9)}#main-menu button[disabled]{background-color:#ccc}#main-menu .keys-container{display:block}#main-menu .keys-container>.keys{display:inline-block;margin-left:10px;margin-right:10px}#main-menu .keys .key{color:#333;border:1px solid #555;background-color:#fefefe;box-shadow:0 0 2px 2px #555;border-radius:2px;font-weight:bold;padding-left:2px;padding-right:2px;margin:0}#main-menu .key>code{padding:0}.keys{padding-top:10px;padding-bottom:10px}.arrow-keys code{background:url('/dist/img/Arrows.png');display:inline-block;top:2px;width:16px;height:16px}.arrow-keys .up code{background-position:0 18px}.arrow-keys .left code{transform:rotate(-90deg);background-position:-2px 16px}.arrow-keys .down code{transform:rotate(180deg);background-position:0 14px}.arrow-keys .right code{transform:rotate(90deg);background-position:2px 16px}.arrow-keys .shoot code{background-position:47px 18px}canvas{position:relative;top:0;left:0}