Dear Kovid,
Thank you so much for popup footnote in the Browser Viewer - that is the important point for me as my books always have many notes. Great job.
However, I would like to read in serif fonts (as default, when no fonts are embedded). Current version forces me to use sans-serif.
And one issue that I have found: in black theme, the footnote text color is not changed, hence, blended into black background.
