Hi Sahill,
Thank you for cleaning my codepen.
Even with your corrections the animation does not correspond to what I want, I wish that the background goes from left to right also, it pivots simply.
See the gif animated : http://www.noelshack.com/2018-10-1-1520274090-mar-05-2018-19-20-31.gif
Thank you for help !
@Sahil thx for update but it's still not expected results like a gif