Two-fingered swiping is in wrong direction for webpages
That's the default and it actually makes sense if you consider the visual metaphor of moving between pages in a book, magazine, or newspaper.  To back from C --> A in a book you swipe the pages from left to right.  If you grab a page and move it from the right to the left, you're moving forward thru the book.

It's the same with the trackpad.  You can change this in Settings --&gt; Trackpad.  If you use any other Apple product, they all use the same direction for moving between pages.