Hi, found the problem, it looks like you have a second 'font-size' in the body style that is overriding teh 'font-size: 3.5em' you are entering. Do this
1) go to Body Style (ATO->Body, Text & Links)
2) put your cursor in teh block where the styles go
3) do a select all and a copy
4) switch to wordpad and do a paste
What do you see? Does it look like this:
font-family: arial, sans-serif; line-height: 20pt; font-size: 3.5em;
If so delete the extra font-size and past it back in body style
If not do the following
1) Make note of each option you have set in the ATO->Body, Text & Links
2) at the bottom of the page, press the RED 'Reset Settings' button.
3) add your settings back in from the notes in step (1).
4) Go visit the web site
I think this should fix the problem, if not let me knopw and we will dig deeper.