||'perspective-origin' and translate()
- This tests that 'perspective' and 'perspective-origin' have the same effect as an appropriately calculated sequence of translate() and perspective(). The reference file's body has a width of 400px and a height of 100px, so the perspective-origin should be (200, 50). The transform-origin is 'top', which works out to (50, 0). Thus we translate by (150, 50) to get the right origin.