JSFiddle - React, Tailwind, and code Playground

HTML

<div class="q1">
  <div class="q2"></div>
  <span></span>
</div>

CSS

.q1{
  border:1px black solid;
  width:500px;
  height:200px;
}
.q2{
   background: red;
  width:50px;
  height:50px;
  margin:5px;
}
span{
   background: red;
  width:50px;
  height:50px;
  margin:5px;
  display:inline-block;
}