<!DOCTYPE html> <html lang="en"> <head> <!-- More than 1 KB of space --> <meta charset=utf-8> <meta content="width=device-width, initial-scale=1" name="viewport"> <title>Non-UTF-16 doc</title> </head> <body> <h1>Non-UTF-16 doc</h1> <p>Euro sign: €</p> <script> window.onload = function() { window.requestAnimationFrame(function() { parent.document.documentElement.removeAttribute("class"); }); } </script> </body> </html>