JSFiddle - React, Tailwind, and code Playground

HTML

<a href="/"><span></span></a>

CSS

a {
    display:block;
    width:50%;
    height:150px;
    border:1px solid blue;
}

a span {
    display:block;
    width:50px;
    height:50px;
    margin:auto;
    background:green;
    border:1px solid green;
}