Today I learnt about the `:placeholder-shown` pseudo-selector thanks to Daniel’s Tweet.
It’s almost the end of the decade and I JUST learned about the :placeholder-shown pseudo selectorhttps://t.co/OmOs3Eyzt3
— Daniel Eden (@_dte) November 14, 2019
What are some things about CSS that you've learnt about recently or that you think others would benefit from knowing?
