Originally Posted by kovidgoyal
calibre allows you to set a base font size, i.e. a font size for the body text. Headings sizes are rescaled to maintain the same ratio, as in the original file. Thus the heading size depends on the heading size in the original file. You can control heading sizes using override css, but to do that you have to understand HTML/CSS
Yes I totally understand that. But what has happened between yesterday and today to change the H2 size. I routinely use Book Designer and yesterday's H2 is definitely smaller than today's. In fact I reconverted a book that I converted yesterday and there is a definite increase in font size in today's version. There is also an increase in size of BD's <SPAN id=title> tags.
I just need to know how to get them back to yesterday's size. Sorry for being so "qualitative".
I've attached a screenshot of the same file generated yesterday and then today in Calibre. Hope this better explains what I mean.