html, body{background-color: #000;color: #eee;margin: 0px;padding: 0px;position: fixed;overflow: hidden;top: 0;bottom: 0;left: 0;right: 0;user-select: none;touch-callout: none;-webkit-touch-callout: none;-webkit-user-select: none;}.dialog{display: none;align-items: center;justify-content: center;font-family: sans-serif;font-size: 170%;position: absolute;width: 100%;height: 100%;background: rgba(255, 255, 255, 0.2);-webkit-user-select: none;-moz-user-select: none;user-select: none;}.dialog.visible{display: flex;}.dialog .wrap{padding: 30px 60px;margin: 20px auto;width: 60%;background: rgba(0, 0, 0, 0.8);border-radius: 5px;}.dialog h1{margin: 0;}a, a:visited{color: skyblue;}#watermark img{position: fixed;overflow: hidden;left: 0;bottom: 0;opacity: 0.3;width: 24px;height: 24px;padding: 12px;-webkit-user-select: none;-moz-user-select: none;user-select: none;}#watermark img:hover{opacity: 1;-webkit-filter: drop-shadow(white 0 0 5px);}canvas{cursor: -webkit-grab;}canvas:active{cursor: -webkit-grabbing;}#play-overlay{position: fixed;width: 100%;height: 100%;left: 0;top: 0;right: 0;bottom: 0;background-color: rgba(0, 0, 0, 0.5);display: none;align-items: center;justify-content: center;}#play-overlay.visible{display: flex;}#play-overlay img{width: 30%;height: 30%;}#error .message{font-family: monospace;}