JSFiddle - React, Tailwind, and code Playground

HTML

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8" />
<title>Untitled Document</title>
</head>
<style>
ul {
    margin:0;padding:0;
    width:960px;
    float:left;    
}
ul li {
    margin:0;padding:0;
    list-style:none;
    float:left;
    width:238px;
    border:1px solid red;    
    height:50px;
}
ul li:hover {
    height:300px;    
}
</style>
<body>

<ul>
    <li></li>
    <li></li>
    <li></li>
    <li></li>
    <li></li>
    <li></li>
    <li></li>
    <li></li>
</ul>    

</body>
</html>