JSFiddle - React, Tailwind, and code Playground

HTML

<h1>Header</h1>
<div class="danger">
  <h4>I want to be marged</h4>
</div>

CSS

.danger {
  border: 1px solid red;
  margin: 20px 0 20px;
}

h1 {
  margin: 30px 0;
}

h4 {
  padding: 10px 0;
}