body {
    text-align: center;
    font-family: sans-serif;
}

main {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 3rem;
    padding: 1rem 0;
}

main > a {
    padding: 1rem 2rem;
    border-radius: 1rem;
    box-shadow: 0.25rem 0.5rem 1rem 0.25rem #aaa;
    text-decoration: none;
}