JSFiddle - React, Tailwind, and code Playground

HTML

<div class="plan-container">
  <div class="options">Options</div><!--
  --><div class="plan">Box one</div><!--
  --><div class="plan plan-featured">Box two</div><!--
  --><div class="plan">Box three</div>
</div>

CSS

.plan-container {
    width: 960px;
    height: auto;
    margin-top: 62px;
    overflow: hidden;
    background-color: red;
}

.plan-container>div{
  display: inline-block;
  vertical-align: middle;
}

.options {
    width: 151px;
    height: 100px;
    background-color: green;
}

.plan {
    width: 220px;
    height: 600px;
    margin-left: 23px;
    background-color: purple;
}

.plan:last-child {
}

.plan-featured{
    width: 300px;
    height: 600px;
    background-color: purple;
}