JSFiddle - React, Tailwind, and code Playground

HTML

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

CSS

body {
  margin: 50px;
}

.container {
  width: 300px;
  background: lightgrey;
  padding: 50px;
}

.box {
  display: block;
  width: 100%;
  height: 300px;
  background: grey;
}

.box:not(:last-of-type) {
  margin-bottom: 50px;
}

JavaScript

//