JSFiddle - React, Tailwind, and code Playground

HTML

<div class="top block">66%</div>
<div class="bottom block">66%</div>

CSS

body { margin: 0; }

.block {
  line-height: 5em;
  text-align: center;
  width: 66%;
  margin: 10px;
}

.top {
  background-color: #FEFD8F;
}

.bottom {
  margin-left: auto;
  background-color: #F6CCFC;
}