Scrollbars. Ever heard of them? They’re pretty cool. Click and drag on a scrollbar and you can move content around in a scrollable content pane. I love that shit. Every day I am scrolling on my computer, all day long. But the scrollbars are getting smaller and this is increasingly becoming a problem...
I bought a macropad with knobs just because of this... (I use a Wacom tablet in place of a mouse and it doesn't have a worthy scrollwheel alternative, so I couldn't navigate many "modern" websites and programs)