Diễn đàn hỗ trợ Firefox

Is there a way to change the size of the sections in Firefox? For instance, I don't need so much space for the listings of Inbox, Sent etc. or the Tabs but would like to have more space for the web pages themselves. I ask because I've got a sight impediment and have to increase the text size. This means that the web "window" (Sorry, don't know the correct terminology) is so big that I have to scroll down to see it.

paypal is blocked on firefox .... why???? it was fine just a few days ago... but yesterday its blocked for security reasons??

the site is unsecure???

something is not right about this.

running mac os mojave firefox 115.29

I am receiving messages from my banks that my browser is no longer supported or that I should update my browser but my settings mean Firefox automatically updates. However, I cannot read PDF statements even though I have Adobe Acrobat Reader installed and, on further investigation, I see that Firefox no longer supports Adobe Reader. I am a fierce supporter of Firefox but does this mean I have to use another browser?

Bank Accounts: I can no longer access my Bank accnts online. My Bank says they no longer support my current version (ESR) & I must upgrade in order to access accnts online. Don't know what to do.