When Firefox opens up the address is typed in at top left in small print. The center bar is there, open, but if you click on it, while the cursor blinks, when you type in an address nothing appears as it does with Google Chrome which we have replaced with Firefox. My wife finds the top left print too small and wants me to go back to Google Chrome where she can read what she has entered. I cannot find anything, anywhere which will allow her to do this. We use Thunderbird and have made a few donations over the years. Hope you can help.