Make rfc texts more human readable

rfc.css

body {
    font-family: 'Helvetica Neue', Helvetica, 'Segoe UI', Arial, freesans, sans-serif;
    font-size: 16px;
    line-height: 1.6;
    width: 1000px;
    margin: 0 auto;
    word-wrap: break-word;
}

a[href] {
    text-decoration: none;
    color: #4183c4;
}

a[href]:hover {
    text-decoration: underline;
}

code {
    font-size: 85%;
    margin: 0;
    padding: 0;
    padding-top: .2em;
    padding-bottom: .2em;
    border-radius: 3px;
    background-color: rgba(0,0,0,.04);
}

pre {
    font-size: 85%;
    line-height: 1.45;
    overflow: auto;
    padding: 16px;
    word-wrap: normal;
    border-radius: 3px;
    background-color: #f7f7f7;
}