CSS

skeumorphism box shadow

border-radius: 50px;
background: #e0e0e0;
box-shadow:  20px 20px 60px #bebebe,
             -20px -20px 60px #4A7485;

skeumorphism box shadow

border-radius: 50px;
background: #e0e0e0;
box-shadow:  20px 20px 60px #000000,
             -20px -20px 60px #ffffff;