body {
    background-image: none;
    height: 100dvh;
}
body > * {
    flex: 1;
}
.background {
    background-image: image-set(
        url("background.webp") 1x,
        url("background.webp") 1.5x,
        url("background.webp") 2x
    );
    background-position: 100% 0%;
}
.center {
    align-items: center;
    display: flex;
    height: 100%;
    justify-content: center;
}