JSFiddle - React, Tailwind, and code Playground

by DJS Baker

HTML

<ul>
        <li>
            <a href="" title="ROLLOVER1">ROLLOVER1</a>
        </li>
        <li>
            <a href="" title="ROLLOVER2">ROLLOVER2</a>
        </li>
        <li>
            <a href="" title="ROLLOVER3">ROLLOVER3</a>
        </li>
        <li>
            <a href="" title="ROLLOVER4">ROLLOVER4</a>
        </li>
    </ul>

CSS

li {
    float: left;
    list-style: none;
    margin: 0 10px;
    display: block;
}
a {
    color: #ccc;
    display: block;
    text-decoration: none;
    position: relative;

}

a:hover {
 color: black;
    -webkit-transition: color 0.3s ease-in;
    -moz-transition: color 0.3s ease-in;
    -o-transition: color 0.3s ease-in;
    transition: color 0.3s ease-in;
}



a:after {

    border-bottom: 2px solid transparent;
    display: block;
    color: transparent;

    content: '';
    margin-left: 50%;
    width: 0%;
    opacity: 0;
    -webkit-transition: all 0.3s ease-in;
    -moz-transition: all 0.3s ease-in;
    -o-transition: all 0.3s ease-in;
    transition: all 0.3s ease-in;
    display: block;
    padding: 2px 0;
}
a:hover:after {
    border-bottom: 2px solid black;
    margin-left: 0%;
    width: 100%;
    opacity: 1.0;
}