I work with different browsers, sometimes with Chrome, sometimes with Microsoft Edge and sometimes with Firefox. With Firefox it is sometimes the case that some websites display the font size or too small. You can adjust the font size to your liking at any time in Firefox. We show you how to do this in this article.
Change font size in Firefox
Start Firefox
Click on the three lines in the upper right corner . Here you can adjust the font size to plus [+] or minus [-] according to your needs.
Note that if you change the font size here, the selection websites will be displayed like this.

But if you want the font size change to be a one-time thing, browse the desired webpage press the CTRL key [+] or [-] key .
If you want to undo the whole thing, press CTRL + 0 (zero)