Disable high contrast mode in Firefox

If Windows high contrast mode is making it difficult to view some web pages, you can disable it in Firefox:

1. In the Menu bar at the top of the screen, click Firefox and then select Preferences or Settings, depending on your macOS version.Click the menu button and select Settings.
2. Select the General panel and scroll down to Language and Appearance.
3. Under Colors, click the Manage Colors… button.

   

4. In the drop-down menu under Override the colors specified by the page with your selections above choose Never.

   

5. Click OK to save your changes.