After being part of the BY for a few years, I today found something that I should have discovered sooner for those of us with less than 20/20 vision. Just scroll to the very bottom of the page and touch on the text at the extreme lower left. This opens up an option for enlarged text. Wonderful. Why it took me so long to trip over this is beyond me. Or, for that matter, how did I avoid learning this when others likely posted about it. In any case, I love the larger font.
Good find!
Also, in pretty much every type of web browser, pressing and holding the 'Ctrl' key and pressing the '+' (plus) key will magnify the entire web page. There are up to 9 levels of magnification, depending on the browser. Pressing and holding the 'Ctrl' key and pressing the '-' (minus) key will do the reverse, allowing you to get more of a web page on you display screen. (Good for images)
Pressing and holding the 'Ctrl' key and pressing the '0' (zero) key will return the magnification to the default.
The magnification setting will remain if you navigate to a new page, but will not affect other tabs in the same browser.
Note that if your device does not have a separate 'plus' key, you can use the key with '=' (equal) and '+' (plus) on it. You do not need to use the shift key to acces the plus in this case.
Have fun!
P.S. Just did a little testing and it appears the "Larger text" button does things in a different way. Ctrl+0 does not bring the text back to the default size if you have used it. You must use Ctrl+plus or Ctrl+minus in that case.