This seems to be old but gold: Parallax Scrolling.
It is an effect where you push content into different layers and scroll or move them in different speed.
You can see a demo here on w3schools: https://www.w3schools.com/howto/howto_css_parallax.asp
The things I found out during research (and that are really new to me) are:
- different speed means also zero speed (static background images are counted as parallax)
- it is not forbidden to create effects on scrolling (so eg: one image can be shown in different situations while the content in the background represents the scenes) AND this is also counted as parallax.
- parallax is still cool :-)
It is an effect where you push content into different layers and scroll or move them in different speed.
You can see a demo here on w3schools: https://www.w3schools.com/howto/howto_css_parallax.asp
The things I found out during research (and that are really new to me) are:
- different speed means also zero speed (static background images are counted as parallax)
- it is not forbidden to create effects on scrolling (so eg: one image can be shown in different situations while the content in the background represents the scenes) AND this is also counted as parallax.
- parallax is still cool :-)