JSFiddle - React, Tailwind, and code Playground

HTML

<header>Header</header>
<div class="content">Content</div>
<footer>footer</footer>

CSS

html { height: 100%; }
body {
  min-height: 100%;
  margin: 0;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}
header {
  width: 100%;
  height: 40px;
  background-color: #1c1c1c;
  border-bottom: 2px solid #f7bb25;
  color:#FFF;
}
.content {
  padding: 10px 0;
}
footer {
  background-color: #1c1c1c;
  border-top: 2px solid #f7bb25;
  color: #FFF;
  height: 40px;
}