JSFiddle - React, Tailwind, and code Playground

by shriek

HTML

<ul>
    <li>Test</li>
    <li>Test2</li>
    <li>Test3</li>
    <div></div>
</ul>

CSS

ul{
    position:relative;
}
ul li{
    display:inline;
}
div {
    width:100px;
    position:absolute;
    border-bottom:5px solid blue;
}