I'm trying to achieve something similar to how Apple does their breadcrumbs in the footer:
I was thinking CSS3 (border-radius), but that does rounded corners only. Or is is a simple HTML5 feature?
Theres is alot examples on the internet just look for css3 breadcrumbs and you will see many tutorials.
http://css-tricks.com/triangle-breadcrumbs/
And you can do that with border here is a example and a tutorial
http://thecodeplayer.com/walkthrough/css3-breadcrumb-navigation