body{
    background-image: linear-gradient(rgba(0,0,0,0.6), rgba(0,0,0,0.6)), url(../../game-pages/browser-games/background2.png);
    background-repeat: no-repeat;
    background-size: cover;
    background-attachment: fixed;
    background-position: center;
}

.bottom-interface-tray {
    position: absolute;
    bottom: 20px;
    left: 50%;
    transform: translateX(-50%);
    width: 100%;
    z-index: 10;
}