title_body: How to set the font sizes of two text sections to be relative to each other? I am editing an ebook, trying to mimic the original format of its text. In the book, footnotes are written in a smaller font with respect to normal text, and so are quotations; this means that a quotation inside a footnote is even smaller.
  
  I used an inline style
  
  &lt;div style="font-size:smaller;"&gt;text&lt;/div&gt;
  
  
  which works well for footnote and quotations. (Actually, the directive is incorporated in their style) It work also for quotations inside footnotes, but in this case the size of the text is really small. I wouldn't want to dictate a font size; but I would like to have something like "use a font 1 pt smaller than the inherited one". Is it possible?
upvoted_answer: I eventually found out that I can use 
  
  style="font-size:90%;"
  
  
  which is not exactly what I wanted but is sufficients for my needs.