Can you use the RGB colors in the box shadow? How is it applied?

Answer 1

Sure you can. For example:
.shadow1 {
-moz-box-shadow: 5px 5px 5px rgba(68,68,68,0.6);
-webkit-box-shadow: 5px 5px 5px rgba(68,68,68,0.6);
box-shadow: 5px 5px 5px rgba(68,68,68,0.6);
}

Answer 2

James has tells the real answer that's good