I have a photo about a screen height down from the top of page
it scrolls as they normally do
I can make it stick at the top
* but I cannot make the subsequent texts and photos slide in front of it
ie i can not force the photo to be in a back layer
*in fact the 'sticky notes' say it will be in top layer when using sticky
the desired effect I see all over the net
https://pacificliberty.com/ (this photo never moves -- is that easier?)
but I can not do it
how??

similarly, I often see
a photo with text over scroll over it
then a fresh photo appears
https://conduit.group/
how/