Determines whether or not the “back” side of a transformed element is visible when facing the viewer.
- Initial value
- Applies to
- transformable elements
- Computed value
- Same as specified value.
- CSS Object Model Property
- The back face of an element is a transparent background, displaying a mirror image of the front face when the back face is observable.
- There are cases when we do not want the front face of an element to be visible through the back face, like when doing a flipping card effect (setting two elements side-to-side). In this case, the property should be set to hidden to make the back face of the element opaque.
This property disables position: fixed on Firefox, see related bug: https://bugzilla.mozilla.org/show_bug.cgi?id=876341
- CSS Transforms Level 1
- W3C Working Draft