Text size

Text size

In a RTF field, I keep adding text from various sources.  Then I try to make all the text the same size, usually the smallest available.  Sometimes it works, sometimes not.  When it doesn't I end up with a messy looking record with different size texts. 

I have tried copying all the text to WORD and making all the same size with no problem, then pasting back in ZOHO.

While it works, it's a time consuming solution. As far as I can tell all the text I bring is is the same, but I must be missing something?