JSFiddle - React, Tailwind, and code Playground

by zhang li

HTML

<div class="container">
  <div class="child"></div>
  <div class="large-width"></div>
</div>

CSS

.container {
    width: 100px;
    height: 100px;
    overflow: auto;
    background: lightblue;
    position: absolute;
  }
  .large-width {
    width: 200px;
    height: 1px;
  }
  .child {
    background: red;
    height: 100px;
    position: absolute;
    left: 0;
    right: 0;
  }