#root {
    text-align: center;
    width: 100%;
    max-width: 500px;
    margin: 0 auto;
    position: relative;

    >:not(.background) {
        z-index: 1;
    }
}

.background {
    position: fixed;
    left: 0;
    top: 0;
    width: 100vw;
    height: 100vh;
    object-fit: cover;
    z-index: 0;
}