What's the ideal relationship between line-height, font-size, and paragraph margin?

Question

For a long time I\'ve noticed that adjusting line-height and adding some extra space between paragraphs both relative to the chosen font-size can m

Answer 1

I can't post a detailed answer, I'm afraid, but I'd suggest that you read Tim Brown's article 'More Meaningful Typography', at A List Apart, for guidance.

In essence, it seems that the width ('measure') of a block of text should be around 50-60 characters, the line-height set at 1.5 (without a unit, which will be 1.5 times the font-size, regardless of the units used to set the font-size).

Characters themselves seem to be set around the 16px mark, but Tim suggests using a scale, such as that represented by the Golden Ratio to define the relative font-sizing of headings, body text, captions and so forth.