JSFiddle - React, Tailwind, and code Playground

HTML

<div id="container">
  <div id="content">
      <p>content</p>
  </div>
</div>

CSS

html, body {
  height: 100%;
  margin: 0;
}

#container {
  background: green;
  min-height: 100%;
}

#content {
  background: red;
  min-height: 100%;
}
#content p {
  background: blue;
  min-height: 100%;
}