JSFiddle - React, Tailwind, and code Playground

HTML

<div id="wrapper">
    <div id="content">
        <div id="box"></div>
    </div>
</div>

CSS

#wrapper{
  border: 1px solid #F68004;
  height: 160px;
}

#content{
  background-color: #0075CF;
  height: 100px;
}