JSFiddle - React, Tailwind, and code Playground

by Tahir Ahmed

HTML

<div class="container">
  <ul>
    <li>Test</li>
    <li>Test</li>
  </ul>
</div>
<button type="button">Toggle translation</button>

CSS

.container {
  width: 100%;
  overflow: hidden;
}

ul {
  display: block;
  width: 100%;
  padding: 0;
  margin: 0;
  transition: width 1s, transform 1s;
}

.open ul {
  width: 200%;
  transform: translateX(-50%);
}

li {
  /* Just some style first */
  font-family: sans-serif;
  color: #fff;
  text-align: center;
  text-transform: uppercase;
  background-color: red;
  padding: 1em 0;
  display: inline-block;
  width: calc(50% - 4px);
}

li:first-child {
  background-color: green;
}

JavaScript

var button = document.getElementsByTagName('button')[0];
var container = document.getElementsByTagName('div')[0];

button.addEventListener('click', function() {
  container.classList.toggle('open');
});