I have a difficulty with separate windows: They all look the same. I'd use a tabgroup for the doc (MDN, StackOverflow), another for the website I'm building (2-

I have a difficulty with separate windows: They all look the same. I'd use a tabgroup for the doc (MDN, StackOverflow), another for the website I'm building (2-3 tabs because you enter data in the first page, view it in the second), and another group for live websites (gmail & co). Total a dozen tabs, well organized in hierarchical manner.