#puzzle-1 {
    position: relative;
    height: 100vh;
}

#puzzle-1 .container {
    height: 100%;
}

#puzzle-1 .bottom-navigation {
    position: absolute;
    bottom: 20px;
    width: 100%;
    display: flex;
    justify-content: center;
    gap: 10px;
}

#header {
    position: absolute;
    top: 0;
    z-index: 1;
    width: 100%;
}