JSFiddle - React, Tailwind, and code Playground

HTML

<div class="has-line">Item1</div>
<div class="has-line">Item2</div>
<div class="has-line">Item3</div>
<div class="has-line">Item4</div>
<div class="has-line">Item5</div>
<div class="has-line">Item6</div>

CSS

.has-line:hover {
    box-shadow: 0 -1px 0 #000;
}