Quote:
Originally Posted by JSWolf
I find numbers like 1.29167 to be silly. Why not just use 1.3? Also, you don't need letter-spacing as it's only one letter. But otherwise, it's similar and will work to fix the first line's larger height.
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It's maybe 15.5 pt. Some numbers just look strange to humans. Actually 15.5 pt converted to em is 1.2916666666 repeating 6, so rounds to 1.29167
It's not true for paper (where an em makes less sense), but for ebooks (maybe only) 1em = 12pt. All margins, fonts and padding should be in em for ebooks, or at worst pt (though pt doesn't work correctly for margins on kepub, does for mobi, azw3/KF8 and epub on almost everything as 12pt = 1em)
Only paper should use inches, centimetres etc.
Nothing should use rem or pica
Edit:
Text, margins or padding should not use px or %
The px or % are for images on ebooks.