I just wanted to inform everyone that if you try to publish a form with a font size that is not a whole number (such as 11.5, 12.5, etc.) it will not work.
For some reason Zoho developers did not add an alert that tells you why the form failed to publish.
Anyways, as long as everything else is okay, it should publish if you use whole number for font sizes (such as 11, 12, etc.).