<!DOCTYPE html>
<html>
  <head></head>
  <body>
    <form id="text-form" method="POST" action="/cross-site-307/i.com/cross-site-307/x.com/echoall">
      <input type="text" id="text" name="text" value="value">
      <input type="submit">
    </form>
    <form id="file-form" method="POST" action="/cross-site-307/x.com/echoall"
          enctype="multipart/form-data">
      <input type="file" id="file" name="file">
      <input type="submit">
    </form>
  </body>
</html>