* {
    box-sizing: border-box;
}

body {
    --bg: #2c2c2c;
    --txt: #d0d0d0;
    --border: #777777;
    font-family: sans-serif;
    background: var(--bg);
    color: var(--txt);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 1rem;
}

section {
    display: flex;
    gap: 1rem;
    flex-wrap: wrap;
    justify-content: center;
}

a {
    color: var(--txt);
    text-decoration: none;
    padding: .5rem 1rem;
    border: 1px solid var(--border);
    border-radius: .3rem;
    width: 8rem;
    text-align: center;
}

a:visited {
    color: var(--txt);
}

a:hover {
    filter: brightness(1.4);
}