body {
    padding: 1.5em;
}
h1 {
    font-size: 20px;
    line-height: 1.5em;
}
h3 {
    font-size: 16px;
    text-decoration: underline;
}
ol {
    padding-bottom:2em;
}
@media (max-width: 480px) {
    h1 {
        text-align:center;
    }
}