I would like to specify a fixed/maximal page width for some pages I frequently visit with Opera. Or maybe just an option I can activate that limits the maximum width for a certain tab.
Wikipedia is a good example of this as it always fits the content of entries to the browser size. That means that on my 1900x1200 wide screen monitor I get line-lengths of some hundred characters. Very annoying to read.
Obviously I could just switch Opera to not be maximized, or even make a single tab only take maybe half the screen size. However I would have to do that 100 times a day. I am looking for an easier way to achieve this.