custom.css

body {
    margin: 0;
    padding: 0;
    overflow: hidden;
    touch-action: none;
    background-color: transparent;
}

.header, .config-box {
    display: none !important;
}

#game-wrapper {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    display: flex;
    justify-content: center;
    align-items: center;
}

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

.trex-game {
    width: 100%;
    height: 100%;
    position: relative;
}