JSFiddle - React, Tailwind, and code Playground

HTML

<div id="page">
  <header>
      <h1>header</h1>
  </header>
  <section>
      <p>page</p>
  </section>
  <footer>
      <p>footer</p>
  </footer>
</div>

CSS

html, body {height: 100%;}

#page {position: relative; min-height: 100%;}

header {
    height: 100px;
    background: #2ed;
}
section {
    padding: 10px 0 110px;
}
footer {
    position: absolute;
    bottom: 0;
    width: 100%;
    height: 100px;
    background: #efa;
}