html, body {
            -webkit-user-select: none; /* Safari */
            -ms-user-select: none; /* IE 10 and IE 11 */
            user-select: none; /* Standard syntax */
            
            width: 100%;
            height: 100%;
            margin: 0;
            overflow: hidden;
            background: #000;
        }
        #renderCanvas {
            width: 100%;
            height: 100%;
            touch-action: none;
        }
        #loadingContainer {
            position: absolute;
            left: 50%;
            top: 50%;
            width: 40%;
            max-width: 400px;
            height: 20px;
            transform: translate(-50%, -50%);
            border: 1px solid #999;
            background: #222;
            border-radius: 10px;
            overflow: hidden;
            display: flex;
            align-items: center;
            justify-content: center;
            color: white;
            font-family: sans-serif;
        }
        #loadingBar {
            position: absolute;
            left: 0;
            top: 0;
            height: 100%;
            width: 0%;
            background: #4caf50;
            transition: width 0.1s linear;
            z-index: 0;
        }
        #loadingText {
            z-index: 2;
            font-size: 12px;
        }