Форум поддержки Firefox для Android

When displaying an iframe video in a popup, clicking the close button and other click events do not work. This issue only occurs in the Firefox browser on Android, while it functions correctly in the Firefox browser on iOS.

Is this a default behavior.

I have been using Firefox since 2004 on my desktop. When I lost some of my eyesight I started using Firefox only because it would let me control the font size and face. See attached image. I am trying to use Firefox on my phone but it does not seem to support this feature. I need this feature in the Android Firefox. If it is there I need to know how to access it and if it is not there I need it added. Or maybe tell me a web browser that supports it. The last time I looked Firefox was the only one that did.