_example.css

body {
    color: black;
    background: white;
    font-family: sans-serif;
    line-height: 1.5;
    max-width: 50rem;
    margin: 0 auto;
    padding: 1.5rem 2rem;
    overflow-y: scroll;
}

h1, h2, h3, h4, h5, h6, dt {
    font: 1rem sans-serif;
    font-family: inherit;
    line-height: 1.2;
}

h2, h3, h4, h5, h6 {
    margin-top: 3rem;
}

h1, h2, h3 {
    color: #005A9C;
    background: transparent;
}

h1 {
    font-size: 1.7rem;
}

h2 {
    font-size: 1.4rem;
}

h3 {
    font-size: 1.2rem;
}

h4 {
    font-weight: bold;
}

h5 {
    font-style: italic;
}

h6 {
    font-variant: small-caps;
}

p {
    margin: 1rem 0;
}

dd > p:first-child,
li > p:first-child {
    margin-top: 0;
}

ul, ol {
    margin-left: 0;
    padding-left: 2rem;
}

li {
    margin: .25rem 0 .5rem;
    padding: 0;
}

dl dd {
    margin: 0 0 .5rem 2rem;
}

pre, code, samp {
    font-family: Menlo, Consolas, "DejaVu Sans Mono", Monaco, monospace;
    font-size: .9em;
    hyphens: none;
    text-transform: none;
}

pre code,
code code {
    font-size: 1rem;
}

pre {
    margin-top: 1rem;
    margin-bottom: 1rem;
    overflow: auto;
}

a[href] {
    border-bottom: 1px solid #707070;
    color: #034575;
    margin: 0 -1px 0;
    padding: 0 1px 0;
    text-decoration: none;
}

a:visited {
    border-bottom-color: #BBB;
}

a[href]:focus,
a[href]:hover {
    background: #f8f8f8;
    background: rgba(75%, 75%, 75%, .25);
    margin-bottom: -2px;
}

a[href]:active {
    border-color: #C00;
    color: #C00;
}

fieldset {
    border: 0;
    margin: 0;
    padding: 0;
}

input {
    border: 1px solid hsl(0, 0%, 62%);
    border-radius: .3em;
    display: block;
    font-size: inherit;
    padding: .3em .5em;
}