Pseudo Element Block Knockout Orig by Chris Coyier
Centers aren't actually transparent, they match background color of area.
Bottom doesn't stretch below otherwise gradient under knockout might be visible. Bottom doesn't stretch below otherwise gradient under knockout might be visible. Bottom doesn't stretch below otherwise gradient under knockout might be visible. Bottom doesn't stretch below otherwise gradient under knockout might be visible.
Radial gradients can do uneven edges. No radial gradients in Opera as of 11.10