JSFiddle - React, Tailwind, and code Playground

HTML

<div class="container"><div class="box"></div><div class="box"></div><div class="box"></div><br/><div class="box"></div><br/><div class="box"></div><div class="box"></div><div class="box"></div></div>

CSS

.box {
      width: 50px;
      height: 50px;
      border: 1px solid black;
      display: inline-block;
      line-height: 50px;
      vertical-align: top;
    }