JSFiddle - React, Tailwind, and code Playground

HTML

<head>
</head>
<div class="container">
<hr>
<section>
  <h1>
  Hallo
  </h1>
</section>
<hr>
<section>
  Hallo2
</section>
<hr>
<section>
  Hallo3
</section>
</div>

CSS

hr {
border: 0;
height: 1px;
background-color: #243588;
}