body {
    margin: 40px auto;
    max-width: 800px;
    line-height: 1.6;
    font-size: 18px;
    padding: 0 10px;
}

a {
    color: darkblue;
    text-decoration: none;
}

a:hover {
    color: #55f;
}

ul {
    list-style-type: '';
    column-count: 3;
}

li {
    margin-top: 10px;
    margin-bottom: 10px;
    padding-left: 0.7em;
}

h1, h2, h3 {
    line-height: 1.2
}