Hi there.
In the first and third parallax sections, the photos are on top of the text when in mobile mode. However the second parallax section, the text is on top and the photo is on bottom. Is there custom CSS to reverse the text and photo for mobile mode? Thank you!
Good morning, hope you are having a great day 
Sorry but such thing is not possible only with CSS, layout changes are necessary as well and without customization of the template, this is not possible 