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Default line height
This video says browsers default to 1em line-height. Every browser I have installed defaults to 1.2em.
as i know line-height values are based on the computed font-size, Normal is supposed to be based on font size but it can and does vary from browser to browser.
anyway you can always change it using Css.
I know that it can vary since the spec leaves it up to the UA with a recommendation of between 1.0 and 1.2, but does it actually vary in the real world? Chrome, Firefox, Safari, Opera, and IE all default to 1.2 on my computer. I think the claim that the default is 1.0 is at least wrong in practice if not in theory.