JSFiddle - React, Tailwind, and code Playground

by Kleber Mota

HTML

<div id="container">
  <hr>
  <div></div>
  <div></div>
  <div></div>
</div>

CSS

div {
  margin: 10px;
}

#container div {
  float: left;
  margin: 10px;
  width: 100px;
  height: 50px;
  background: #000;
}

#container hr {
  margin-bottom: -50px;
  border: 2px solid #000;
}