JSFiddle - React, Tailwind, and code Playground

HTML

<div class="container">
<div class="green">asdf</div>
asfdasdf
</div>

CSS

body {
  background: black;
  height: 100%;
  overflow-x: hidden !important;
}
.container {
  overflow-y: scroll;
  height: 500px;
}
.green {
  background: green;
  width: 100%;
  height: 1500px;
}