Although GIF animations and animations seem to be everywhere, some smart people have improved the visual experience of GIF animations to a higher level. Adding a solid color (usually white) vertical line to a group of images produces an incredible three-dimensional effect. When the characters or objects in the figure are moved to the foreground, they seem to have to go through the screen and directly hit the audience.
The white strip added is the visual marker for entering the foreground. Once an object "enters" the front of the line, the white lines are blocked, and the visitor's brain immediately converts the screen into a 3D scene. Excellent 3D GIF makers use this effect to select some scenes and objects (whether characters, animals, monsters, or projections) from movies or video clips ), you can make it have a three-dimensional sense of "entering" the foreground.
Here is a group of 3D GIF animations made by foreign users: (images from viralnova and Tumblr)
A set of magical 3D GIF animations