If on your Apple computer, you have problems scrolling left or right through the columns of the screener (or see no scroll bar) this will solve your problem:
Go to System Preferences (System Preferences, not Safari Preferences) > General > Show Scroll Bars: Set this to "Always".
If this has not solved your problem take a look at this discussion on the Apple website:
How can I get my scrollbar back in Safari?
Keywords: Safari, iMac, Macbook, Mac