Multiple borders with CSS

from blog Oliver Caldwell's blog, | ↗ original
Any time that I spot an element with multiple borders in a design that I am coding, I instantly turn to Google. Sadly, it never yields the results I seek. I am always hopeful that in the last month every browser has implemented something like this. div.multi-border { width: 100px; height: 100px; background-color: rgba(0, 0, 0,...