JSFiddle - React, Tailwind, and code Playground

HTML

<ul>
<li>Number 1</li>
<li>Number 2</li>
<li>Number 3</li>
</ul>

CSS

ul {
    height: 400px;
    border: 1px solid #000;
    width: 200px;
}
li {
    background-color: #000;
    color: #fff;
    display: block;
}