Slider (overflow: hidden)
Slider Mask (overflow: visible)

The FIRST Slide's content

First Slide wrap

A"ghost slide", duplicate of the LAST slide's content
added inside the FIRST slide

Slide content
Slide content
Slide content
Slide content

A LAST Slide's content

Last Slide wrap

A"ghost slide", duplicate of the FIRST slide's content
added inside the LAST slide

Slider arrow
Slider arrow