JSFiddle - React, Tailwind, and code Playground

HTML

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

CSS

.q1{
  width: 100px;
  height: 200px;
  border: 1px black solid;
  float: left;
  margin-left: 10px;
}
.q2{
  width: 300px;
  height: 100px;
  background: red;
}