:empty
pseudo-class selector can used when you need select empty dom in CSS let's show case
<!-- will be selector --> <div></div> <div></div> <div><!-- comment --></div> <!-- will not selected if has comment with line break --> <div> <!-- comment here --> </div> <!-- will not be select if contain space --> <div> </div> <!-- not be select if contain content--> <div> anything </div> <!-- will be selector --> <div></div>
:empty
just used for select DOM which contain nothing even comment.
Hope it can help you :)
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