<!DOCTYPE html>
<html>
  <head>
    <style>
      @font-face {
        font-family: roboto;
        src: url('Roboto-400.woff2') format('woff2');
      }

      @font-face {
        font-family: roboto;
        font-style: italic;
        src: url('Roboto-400-not-found-italic.woff2') format('woff2');
      }
    </style>
  </head>
  <body>
    <div style="font-family: roboto">Hello</div>
  </body>
</html>
