*, *::before, *::after {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html, body {
    width: 100%;
    height: 100%;
    overflow: hidden;
    background: #000;
    /* Prevent pull-to-refresh and overscroll on mobile */
    overscroll-behavior: none;
    touch-action: none;
}

#game-canvas {
    display: block;
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    /* Prevent text selection on mobile */
    -webkit-user-select: none;
    user-select: none;
    -webkit-touch-callout: none;
}

/* Fullscreen fixes */
:fullscreen {
    background: #000;
}

::backdrop {
    background: #000;
}