The CSS backface-visibility property determines whether or not the back
face of the element is visible when facing the user. The back face of an
element always is a transparent background, letting, when visible, a mirror
image of the front face be displayed.
The CSS backface-visibility property determines whether or not the back face of the element is visible when facing the user. The back face of an element always is a transparent background, letting, when visible, a mirror image of the front face be displayed.