JSFiddle - React, Tailwind, and code Playground

HTML

<div class="container">
  <div class="box"> BOX 1</div>
  <div class="box"> BOX 2</div>
  <div class="box box2"> BOX 3 .</div>
</div>

CSS

.container {
  border: 1px solid #59c;
  width: 60vw;
  background: #ccc;
  height: 200px;
  margin: 0 auto;
  display: flex;
  padding: 30px;
}

.box {
  font-size: 18px;
  font-weight: 800;
  background: #e5f;
  border: 1px solid #99c;
  padding: 20px;
}