30 years ago in 1994 you could have been using Linux (v0.99/1.0/1.1), Apple System 7 (not OSX), and Windows (3.2) - but not with Firefox.
You might have used Lynx or NCSA Mosaic, or by the end of 1994 Mosaic Netscape (later Netscape Navigator) or beta Opera.
30 years ago in 1994 you could have been using Linux (v0.99/1.0/1.1), Apple System 7 (not OSX), and Windows (3.2) - but not with Firefox.
You might have used Lynx or NCSA Mosaic, or by the end of 1994 Mosaic Netscape (later Netscape Navigator) or beta Opera.