Firefox 67, aka 'Firefox Legacy', running in Lion.You’ll want to use Safari if you want to get the most battery out of your laptop.' Average Battery Life in Chrome, Firefox, and Safari. Firefox is a little better, but Safari is the clear winner.Upon launching Firefox ESR for the first time, you’ll see the window below. Once completed, you can safely eject the mounted virtual drive and drag the. After clicking the replace button, Firefox ESR files will be installed in your Applications folder. To begin, click the menu button (three horizontal bars, or the hamburger menu) and then click “Options” (Windows) or “Preferences” (Mac). Deleting cookies in Firefox is the same on Windows and Mac. Delete Cookies In Firefox on Windows and Mac.Ask Question Asked 7 years, 3 months ago. Force visible scrollbar in Firefox on Mac OS X.Good for: readability and security and simplicity First off, let’s look at Safari, the built-in web browser on your Mac. So, in this post, we’ll look at Chrome, Firefox and Safari and go over what they can individually offer your web browsing experience on your Mac.selector, and of course the declaration blocks. That said, here are some notes that apply to all of the hacks in this article: For each hack, change only #selector. These Firefox hacks are organized according to version number and presented with ease of copying and pasting in mind.