JSFiddle - React, Tailwind, and code Playground

HTML

<div class="container">
  <div class="title">Title</div>
  <div class="content">Content</div>
  <div class="footer">Footer</div>
</div>

CSS

.container {
  width: 100vw;
  height: 100vh;
  font-size: 5vh;
}

.title {
  height: 20vh;
  background-color: red;
}

.content {
  height: 60vh;
  background: blue;
}

.footer {
  height: 20vh;
  background: green;
}