 I want Firefox Focus for Windows 10 and macOS Sierra ! can you do that ? I-Firefox Isithangami Sokweseka Ukwesekwa kwe-Mozilla19524 imibono113016 22:24I-ejenti Engumsebenzisi: Mozilla5.0 Macintosh; Intel Mac OS X 10.12; rv:50.0 Gecko20100101 Firefox50.0113016 23:08 