JSFiddle - React, Tailwind, and code Playground

HTML

<section>
    Hello<br />Hello<br /> Hello<br />Hello<br /> Hello<br />Hello<br /> Hello<br />Hello<br /> Hello<br />Hello<br />
</section>

CSS

section {
    background: #f00;
    height: 100px;
}

section div {
    height: 100%;
}