The 2nd artwork ('A Door Somewhere " - Bert Monrov) had me really confused for a moment.
When I scrolled down to it, there was a sort of flickering effect, like as if it were a gif, with a flickering light adding ambience to the scene.
But no, it's just how that sort of black & white shading looks when you scroll past it - amazing effect!
SSLy
As the neighbour mentions, it's only a case of your display having ghosting. This effect is not present on eg. OLED screens.
donkeybeer
What monitor do you have?
promiseofbeansOP
This was on an OLED Samsung phone, screen running at 120Hz
donkeybeer
Yes, I asked because I got curious about the effect and opened the link to see it but didn't notice it on mine, so I figured it must be specific to your display.
But no, it's just how that sort of black & white shading looks when you scroll past it - amazing effect!