el doc

<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01//EN"
"http://www.w3.org/TR/html4/strict.dtd">
<html>
  <head>
  <meta http-equiv="Content-Type" content="text/html;
  charset=iso-8859-1">
  <title>Sample document</title>
  <link rel="stylesheet" href="style1.css">

  </head>

  <body>
    <p>
      <strong>C</strong>ascading
      <strong>S</strong>tyle
      <strong>S</strong>heets
    </p>
  </body>
</html>