:root {
    --sh-border-radius: 4vw;
    --sh-border-width: 2.5vw;
    --sh-border-color: #fff;
    --sh-card-width: 55vw;
    --sh-card-height: calc(var(--sh-card-width) * 1.5);
}

body {
    margin: 0;
    padding: 0;
}