JSFiddle - React, Tailwind, and code Playground

HTML

<div class="container">
  <div class="childe" style="background-color: black;">
    &nbsp;
  </div>
  <div class="childe" style="background-color: red;">
    &nbsp;
  </div>
</div>

CSS

.container {
  overflow: hidden;
}

.childe {
  float: left;
  width: 100px;
}