Board Thread:Support Requests - Getting Technical/@comment-3279487-20170202121822

Hi folks, for styling purposes I often creates cells/divs with an internal border like this:

You can see an example here.

You might ask: why don't I simply add a border? Well I personally like it better this way because no matter what the color combination is, there is always a contrast that shows the border. Now my question: is there a way to achieve this simply using CSS without creating any child/indent element (like a div or another cell)? Basically make this div look like the one above (with the broder some px inside it)

Test element Test element

I'm asking this particularly with portable infoboxes in mind. 