https://i.sstatic.net/Q5U4u.png
https://i.sstatic.net/miWXC.png
The images depict a visual artifact created by the radial gradient, which I am utilizing as a mask to achieve an iOS-like effect.
background:-webkit-radial-gradient(transparent 0%,transparent 30%,white 32%);
background:-o-radial-gradient(transparent 0%,transparent 30%,white 32%);
background:radial-gradient(transparent 0%,transparent 30%,white 32%);