Someone has deleted my comment. Why? I will say it again. Firefox 57 is faster, with better UI design, i love dark theme option and it works under old Os X Mave

Someone has deleted my comment. Why? I will say it again. Firefox 57 is faster, with better UI design, i love dark theme option and it works under old Os X Mavericks perfectly. Waiting for High Sierra optimization (is very heavy on cpu) and will use it exclusively.