问题
I know that the :before, and :after pseudo elements are not supported in empty elements, but what about these:
<select><option><textarea><button>
A list would be nice! Thanks guys!
回答1:
I put together a list of every HTML element. Some aren't even legal where they're used... but it still seems to work.
demo
If it says "it works" in green letters, that element is supported.
来源：https://stackoverflow.com/questions/8621127/list-of-html-elements-that-support-the-css-before-and-after-pseudo-elements