quotes.css

/* @see http://www.w3.org/TR/CSS2/generate.html#quotes */
/* chrome(safari maybe?) does not support quote, it use ::before and :after pseudo-elements to decorate q tag */
q::after,
q::before {
    content: '"'
}

/* Firefox full support quotes */
/* e.g. <span rel="book" lang="zh">I have a Dream</span> */
span[rel=book] {
    border-bottom: 2px solid #444;
    font-weight: bold;
}
span[rel=book] {
    font-style: italic;
}
span[rel=book]:lang(zh) {
    quotes: '《' '》';
    font-style: normal;
}
span[rel=book]:before {
    content: open-quote;
}
span[rel=book]:after {
    content: close-quote;
}