JSFiddle - React, Tailwind, and code Playground

HTML

<a class="special">Test</a>

CSS

.special:hover:before{
    content: '';
    position: fixed;
    display: block;
    top: 0; bottom: 0; left: 0; right: 0;
    z-index: -1;
    background-color: #ff0000;
}