JSFiddle - React, Tailwind, and code Playground

HTML

<div id='container'>
  <div id='left-block'>Left Content</div>
  <div id='right-block'>Right Content</div>
</div>

CSS

#container
{
  background: blue;
  display: block;
  /* height: 50px; */
}
#left-block {float: left;}
#right-block {float: right;}