New Firefox causes errors to display on websites

After updating Firefox, I have errors display with Web sites, very little worse than others. IE and Chrome do not have these problems. I tried refreshing Firefox and I've twice deleted and re-uploaded the program with no improvement. Sometimes mistakes disappear after you move the slider on the problem. I can't find anything on the Forum that solves the problem. I enclose some screenshots to illustrate the problem.

Type of topic: preferences #content< enter > in the address bar.
In front of the fonts and colors, press the Advanced button.
On the bottom, turn on allow the Web Sites to pick their own.

  • see if there are updates for your graphics card disk drivers

https://support.Mozilla.org/KB/upgrade-graphics-drivers-use-hardware-acceleration

  • Disable protected mode in the plugin Flash (Flash 11.3 + on Windows Vista and later versions)

https://forums.Adobe.com/message/4468493#TemporaryWorkaround

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https://forums.Adobe.com/thread/891337
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