html, body {
        margin: 0;
        padding: 0;
        width: 100%;
        height: 100%;
        overflow: hidden;
        background: #000;
    }

    #gameContainer {
        position: fixed;
        top: 0;
        left: 0;
        width: 100vw;
        height: 100vh;
        margin: 0;
        padding: 0;
    }

    #gameCanvas {
        width: 100% !important;
        height: 100% !important;
    }

    .keepRatio {
        width: 100%;
        height: 100%;
    }