HTML5 syntax is compatible with both HTML4 and XHTML1. Want to close empty elements with a slash? Go for it. Rather not? Then don't. Want to uselower case? Upper case? Take your pick. In other words, you really don't have to change the way you handle these things.
Learn HTML 5 (PDF)
Instagram comments can now be edited (within 15 minutes)
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Meta is giving users the ability to edit Instagram comments they leave on
posts, though only within a 15 minute window after they're posted. The
setup is...
25 minutes ago
