JSFiddle - React, Tailwind, and code Playground

by luka kupunia

HTML

<div class="box">
  <div class="inner"></div>
</div>
<div>fwefwe</div>

CSS

div.box {
  width: 50%;
  position: relative;
  background: red;
  height: 300px;
}
div.inner {
  width: 100%;
  height: 100%;
  position: absolute;
  background: blue;
  left:0 ;right:0;
}