.html-formatter
{
    font-size: 0;
    line-height: 0;
    /* Someday the above sizing hacks won't be necessary:
       http://dev.w3.org/csswg/css4-text/#white-space-collapsing
     */
    /* white-space-collapse: discard; */
    padding: 20px;
}

.html-formatter > span
{
    font-size: 16px;
    line-height: 24px;
    white-space: pre-wrap;
}
