body {
    background-image: url('images/magenta-tile-4.png');
    max-width: min(90vw, 40rem);
    margin: 1rem auto;
}

main {
    font-family: sans-serif;
    background-color: black;
    color: hotpink;
    border: 1rem double purple;
    padding: 1rem;
}

h1 {
    text-align: center;
}

.subtitle {
    text-align: center;
    font-style: italic;
}

a:link {
    color: skyblue;
}

a:visited {
    color: gray;
}

article img {
    display: block;
    border: 0.25rem solid skyblue;
    margin-left: auto;
    margin-right: auto;
    max-height: 12rem;
}