body {
    background-image: url('./gfx/background_grass.jpg');
    background-size: 910px 540px;
    margin: 0px;
    padding: 0px;
    cursor: none;
    touch-action: none;
}

.lock-screen {
    height: 100%;
    overflow: hidden;
    width: 100%;
    position: fixed;
}