JSFiddle - React, Tailwind, and code Playground

HTML

<div id="footer">
    <div class="column"><div></div></div>
    <div class="column"><div></div></div>
    <div class="column"><div></div></div>
    <div class="column"><div></div></div>
</div>

CSS

#footer .column {
    float: left;
    width: 25%;
    background: red;
}

#footer .column div {
    margin: 10px;
    height: 100px;
    background: blue;
}