Quote:
Originally Posted by mzso
Probably a stupid question. But what does using 1.2 (no unit?) and 1.2em mean?
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1.2 and 1.2em are the same, but 1.2 is the standard, and the "em" is not needed.
If the line-height is not included in the <body> selector (such as, in the .calibre CSS selector) or is not included in the paragraph class selectors, the line-height will not be standard (i.e., the lines will be too close together).
Everything I included in my response helps to keep the line-heights standard in all the epub files I convert and fixes several other things, such as, justifying the paragraphs, having standard indents of 1.2em, having no indents for chapter opening paragraphs, etc.