<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01//EN"
  "http://www.w3.org/TR/html4/strict.dtd">

=====================================

<!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-8859-2">
 <title>Weryfikacja poprawnoci dokumentu</title>
</head>
<body>
 <form action="" method="POST">
  <input name="text" type="text">
  <br>
  <input name="submit" type="submit">
 </form>
</body>
</html>


=====================================

Line 11, column 32: document type does not allow element "INPUT" here; missing one of "P", "H1", "H2", "H3", "H4", "H5", "H6", "PRE", "DIV", "ADDRESS" start-tag
<input name="text" type="text">


=====================================

...
  <form action="" method="POST">
    <p>
    <input name="text" type="text">
    <br>
    <input name="submit" type="submit">
    </p>
  </form>
...

=====================================


