It’s something that’s probably best left to JS but flexbox can sort them that using the
There is no possibility of adding a border since there is no element to apply it to. You could possibly do something with pseudo-elements but that sounds really messy especially as you there is no
Frankly it makes more sense to ensure that your elements are encapsulated before they are added to the DOM….not after.
But as I said, you’re better of doing this with JS.