html, body {
    margin: 0;
    height: 100%;
    overflow: hidden;
    background-color: black;
}

#bg, #fg {
    opacity: 0;
    transition: opacity 0.5s ease;
}

#bg {
    position: fixed;
    object-fit: cover;
    filter: blur(50px);
    transform: scale(1.1)
}

#fg {
    position: fixed;
    inset: 0;
    width: 100%;
    height: 100%;
    object-fit: contain;
}