Surprising CSS selectors you can use today

As of date of writing which was 2016. While working on the Juju GUI project, I was reviewing a pull request when I spotted there were no prefixes on box-sizing. I thought I should check if they needed it before asking the requester to add them. In doing so I was surprised to find that there are a lot more CSS features with global support than I originally thought. So I trawled through the chasms…