body {
    background-image: url('wood-texture.jpg');
    color: white;
}

h1 {
    margin-top: 0;
}

a {
    color: magenta;
}

a:visited {
    color: blueviolet;
}

main {
    background-color: rgba(0, 0, 0, 40%);
    width: 80%;
    margin-left: auto;
    margin-right: auto;
    padding: 1rem;
}

section+section {
    margin-top: 1rem;
}

footer {
    padding-top: 1rem;
}