Mozilla Firefox – Families In Focus (Essex)
Accessibility | Text Size
Select the View menu from the toolbar at the top of your browser
Select the Text Size option
From the menu select Increase or Decrease to change the size of your text or Normal to go back to the deafult size.
Or you can use the keyboard shortcuts:
Ctrl and + to increase the text size
Ctrl and – to decrease the text size
Ctrl and 0 to go back to the default size