This is huge for someone learning CSS. #fxhelp
If you are running Firefox versions 61 – 65 and 1) did not receive the deployed fix and 2) do not want to update to the current version (which includes the permanent fix): Install this extension to resolve the expired security certificate issue and re-enable extensions and themes.
Since version 5.0, a rapid release cycle was put into effect, resulting in a new major version release every six weeks on Tuesday. Firefox 70 is the latest version released on October 22, 2019.
Firefox 70 is the latest version released on October 22, 2019.
Firefox 70 is the latest version