Quote:
Originally Posted by JimmXinu
It's a coding issue by the fic writer. Or more likely, their editor program.
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I'm thinking it's likely the author wrote it in Google Docs (or another word processor that produces yucky garbage code) then copy-pasted it into AO3's rich text editor. That's known to result in a lot of weird formatting issues. I need to clean up the code of my own fanfic sometime.
Quote:
Originally Posted by JimmXinu
I'm a bit baffled why the browsers are choosing to interpret nested <i> tags as not italic. Is it that common an HTML error? 
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Nested
<i> tags are technically legal, though a bit odd. I try to explain:
HTML5 uses heavy use of what's caled semantic HTML. So while
<em> is used for convey "stress emphasis" (e.g. noting something is
very important

),
<i> is supposed to convey an "alternate voice or mood" (e.g. technical terms, character thoughts, etc). The semantic distinction is mostly for users of screenreaders—
<em> changes inflection, but
<i> doesn't.
So while nesting
<em> is meant to be even
greater emphasis, there's no real definitive of what a nested
<i> is actually supposed to convey. But it does create a separate element and italics can't be made
more italic (unlike strong/bold text), so it's not surprising that they would be de-italicized instead.