JSFiddle - React, Tailwind, and code Playground

HTML

<div class="container">

	<!-- Equal height columns -->
  <div>Equal height columnsdiv</div>
	<div>Equal height columnsdiv Equal height columnsdiv</div>
	<div> Equal height columnsdiv Equal height columnsdiv</div>
	<div>Equal height columnsdiv</div>
	<div>Equal height columnsdiv Equal height columnsdiv</div>
	<div> Equal height columnsdiv Equal height columnsdiv</div><div>Equal height columnsdiv</div>
	<div>Equal height columnsdiv Equal height columnsdiv</div>
</div>

CSS

.container {
        /* Initialize the flex model */
	display: flex;
        /* These are the default values but you can set them anyway */
	flex-direction: row;    /* Items inside the container will be positioned horizontally */
  align-items: stretch;   /* Items inside the container will take up it's entire height */
}
.container div{
  max-width: 100px;
  background: #eaeaea;
  margin: 10px;
  padding: 10px;
}