JSFiddle - React, Tailwind, and code Playground

HTML

<header>Header</header>
    <main>Here comes the content ...</main>
<footer>Footer</footer>

CSS

body {
  display: flex;
  flex-direction: column;
  height: 100vh;
}
header, footer {
  flex-shrink: 0;
}
main {
  flex: 1 0 auto;
}