Win 7HP FF help! Pg extends beyond screen

It doesn't seem to be in either kiosk or full screen mode. Sorry I didn't describe this better to begin with; many apologies.

Her page is so large that there's a horizontal scrollbar showing, as well as the vertical one. Using that, she can move to see the entire page, but wants to view in in the normal format.

Thanks for any help you can give!

Did you try the usual Control - (minus) key to resize the page?

Control/minus made the screen really small - unreadable. When she closed FF and then restarted it, it went back to the overly-large size it had been.

F11 had a negligible effect.

Thanks very much for the suggestions, though! Am going to try more research online and see if I can't find more info...

That's useful - I'm sure it'll come in handy.

The following may also come in handy for someone who's having the same problem. This is a copy-and-paste of my paraphrase to my friend of what I found in Firefox Support:

1) Close firefox, then hold down the shift key when you click the button that starts firefox. This will start ff in 'safe mode.' when it does that, you should see 2 buttons. one will be 'reset firefox.' click on that. (Don't worry; you won't lose anything important) I think this will fix the size, but you may still have an issue or two.

2) If that didn't fix it, then click the orange Firefox icon at the top left of your page. Click options. 'Menu bar' will be the first option listed. If it doesn't have a check mark next to it, click on 'menu bar' and that will keep it there permanently.

3) You may not still be seeing the search bar line. If not, do this:
Right-click on an empty section of the tab strip and select Customize, to open the Customize Toolbar window. Then click Restore Default Set (that'll be on the lower right, just above the 'done' button). Then click 'done.'