JSFiddle - React, Tailwind, and code Playground

HTML

<!DOCTYPE html>
<html lang="en">

  <head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <link rel="stylesheet" href="css/styles.css">
    <link rel="stylesheet" href="css/index.css">
    <title>Kraut und Rueben</title>
  </head>

  <body>
    <h1 class="mainheader">Kraut und Rueben</h1>
  </body>

</html>

CSS

body {
  color: red;
}

.mainheader {
  color: red;
}