JSFiddle - React, Tailwind, and code Playground

HTML

<!DOCTYPE html>
<html lang="en">
<head>
  <meta charset="UTF-8">
  <title>Document</title>
</head>
<body>
   <a href="#menu">Open menu</a>
   <div class="menu" id="menu"></div>
</body>
</html>

CSS

.menu {
  width: 400px;
  height: 100vh;
  background-color: #CCC;
  transform: translateX(-100%);
}

.menu:target {
  transform: translateX(0);
  transition: transform .3s;
}