Parallax with a box gradient

Probably missed something when constructing a parallax. I can use parallax with a photo no problem. But when constructing a plain coloured gradient box, the fixed in window is greyed out. I can lock, but I cannot fix in window.

Maybe that’s not the answer you expect: Why not use a »photo« of a gradient. There is a great generator on the web ( which let you customize gradients to your hearts content with ease and are downloadable as jpg files in seconds. Hope that helps you in the first place…


That would work. You can also do some grabs of backgrounds from upsplash or pixiebay.

I think I’ve got it. Viewed this on an iPad and desktop. The parallax image was automatically increased by Sparkle. Test site is

I still wonder if Sparkle can create a parallax from a plain box.