Hi. I have already been using Calibre to modify the fonts on non-DRM'd eBooks that I read on my Sony PRS-650 for quite some time. Now, I would like to do a bit more tweaking to make the fonts appear darker.
My first question is: what are the allowable CSS font-weight property values? I know of "normal" and "bold" but what are the other valid values?
My second question is: In Googling the web, I've seen numerical font-weight valid values being listed but I am not able to get these to work for some reason (e.g., "400", "600", "700", "800", "900"). Is there something I need to specify when using numeric weights instead?
