JSFiddle - React, Tailwind, and code Playground

HTML

<ul>
    <li><a href="http://makandra.com/" title="The cool kids">makandra</a></li>
    <li><a href="http://www.google.com/" title="Search stuff">Google</a></li>
</ul>

CSS

a:before {
    content: attr(title)": ";
}