Video options blanked out...how reset

[HhupaCabra]

Since installing G&K and after electing the "do not show again" on Steams setting for Civ 5 my video options are blank and cannot be reset.
How do I access the Steam settings to change the video display?

p.s. In full screen the "apple header" blocks the top portion of the civ 5 screen display

 

[AlanH]

I haven't tested it, but normally you hold down the Command key as you launch Civ to get the video options window.

 

[HhupaCabra]

thanks