JSFiddle - React, Tailwind, and code Playground

by sqren

HTML

<div class="spacing">
hey
</div>

<div class="container">
  <div class="left">
    Left
     hey<br>hey<br>hey<br>hey<br>hey<br>hey<br>hey<br>hey<br>hey<br>hey<br>hey<br>hey<br>hey<br>hey<br>hey<br>hey<br>hey<br>hey<br>hey<br>hey<br>hey<br>hey<br>hey<br>hey<br>hey<br>hey<br>hey<br>hey<br>hey<br>hey<br>
 hey<br>hey<br>hey<br>hey<br>hey<br>hey<br>hey<br>hey<br>hey<br>hey<br>hey<br>hey<br>hey<br>hey<br>hey<br>hey<br>hey<br>hey<br>hey<br>hey<br>hey<br>hey<br>hey<br>hey<br>hey<br>hey<br>hey<br>hey<br>hey<br>hey<br>

    </div>
  <div class="right">
    <strong>Right</strong>
 hey<br>hey<br>hey<br>hey<br>hey<br>hey<br>hey<br>hey<br>hey<br>hey<br>hey<br>hey<br>hey<br>hey<br>hey<br>hey<br>hey<br>hey<br>hey<br>hey<br>hey<br>hey<br>hey<br>hey<br>hey<br>hey<br>hey<br>hey<br>hey<br>hey<br>
   </div>
</div>

CSS

html, body {
 height: 100%;  
 margin: 0;
 padding: 0;
}

.spacing {
  height: 66px;
  background-color: blue;
}

.container {
    background-color: red;
    height: calc(100% - 66px);
    position: relative;
}

.left {
  background-color: purple;
  width: calc(100% - 320px);
  position: absolute;
  top: 0;
  bottom: 0;
  overflow: auto;
}
.right {
  background-color: green;
  width: 320px;
  position: absolute;
  top: 0;
  bottom: 0;
  right: 0;
  overflow: auto;
}