Version 86.0, first offered to Release channel users on February 23, 2021
We'd like to extend a special thank you to all of the new Mozillians who contributed to this release of Firefox.
At Mozilla, we believe you have a right to privacy. You shouldn’t be tracked online. Whether you are checking your bank balance, looking for the best doctor, or shopping for shoes, unscrupulous tracking companies should not be able to track you as you browse the Web. For that reason, we are continuously working to harden Firefox against online tracking of our users.
CSS image-set() function in CSS is now enabled, allowing for responsive images in CSS.
Inactive CSS tool is now showing a warning when margin or padding is set on internal table elements.
Developer Tools Toolbox is now showing a number of errors on the current page. This is a quick way to surface information to a developer that something is wrong with their page. Clicking on the red exclamation icon navigates the user to the Console panel.