Suddenly, the password login screen for USBank switched to a minature size in upper left hand corner (recognizable but too small to read the small print), while initial Home screen and user name login screen were normal full screen size.

No problems during earlier site visits but during one usage, the screen size of the password login screen suddenly shrunk as described. I must have pushed some key accidentally that changed the display settings. Now happens every time I try to log in. Miniature login screen is functional but screens that follow are also miniature. Rebooting didn't help and zoom screen is set to normal. Using new Toshiba computer with Windows 7. Same website still works normally on Internet Explorer but not on Firefox. How do I get all screens to be normal size again?