border-collapse: separate (default):

Firstname	Lastname
Peter	Griffin
Lois	Griffin

border-collapse: collapse:

Firstname	Lastname
Peter	Griffin
Lois	Griffin

`border-collapse: separate`
Browser	Layout Engine
Firefox	Gecko
Edge	EdgeHTML
Safari	Webkit
Chrome	Blink
Opera	Blink

`border-collapse: collapse`
Browser	Layout Engine
Firefox	Gecko
Edge	EdgeHTML
Safari	Webkit
Chrome	Blink
Opera	Blink