Using Opera and my scroll bar disappears?

I just switched to Opera and after fiddling about with the appearance, found it disappeared? I don't know how or why, because I know I'd never chose to take that out.

I mean. Am I crazy? Was there never one in the first place?

And how do I get it back??

Using Opera and my scroll bar disappears?nintendo ds browser

Try to reboot your computer - maybe Opera and your computer crashed.