Originally Posted by oxen
Font too small problems, is because you used em units and fixed font sizes. So that would be difficult to have the desired effect on non-testing machine. It is a good method to use % as a font size unit. So, different machines and reading system can adjust font size by font menu.
Sorry, that is nonsense. Fixed font size causes problems with fonts (not changeable, to big, to small, etc). Setting the font size in em or in percentages does not. In fact, for most readers percentages and ems are the same. That is, 1em is 100% and for example 1.2em equals to 120%. I always use ems for basic settings (usually p-tags) and percentages for changes within a paragraph (spans). That works well on all the readers I have seen so far.