JSFiddle - React, Tailwind, and code Playground

HTML

<style>
div {
        height: 10px;
        width: 10px;
    display:table;
}
#a {
        background: #fcc;
}
#b {
        background: #ccf;
}
</style>
<div id="a">1<br/>2</div>
<div id="b"></div>