JSFiddle - React, Tailwind, and code Playground

HTML

<html>
<head>

</head>
<body>
<center>
<div id="container">
<div class="element">1</div>
<div class="element">22</div>
<div class="element">333</div>
<div class="element">4444</div>
<div class="element">55555</div>
<div class="element">666666</div>
</div>
</center>
</body>
</html>

CSS

#container {
  display: flex;
  width: 300px;
  overflow: auto;
}

.element {
  background-color: black;
  color: white;
  margin-right: 10px;
  height: 100px;
  width: 100px;
  font-size: 20px;
  text-align: center;
}