html, body {
    position: relative;
    height: 100%;
    margin: 0;
    padding: 0;
}

main {
    position: relative;
    top: 40%;
    transform: translateY(-50%);
    text-align: center;
}

h1 {
    margin: 0;
    display: inline;
}

a, a:visited {
    color: inherit;
    text-decoration: none;
}
a:hover {
    text-decoration: underline;
}