哎，说什么好呢
<body>
<html xmlns="3./1999/xhtml">
</body>
</html>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Stri" "3./TR/xhtml1/DTD/xhtml1-strict.dtd">
<body>
<html xmlns="3./1999/xhtml">
</body>
</html>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Stri" "3./TR/xhtml1/DTD/xhtml1-strict.dtd">