I have given box shadow effect for a DIV. But the same code looks darker in safari and thinner in chrome. The shadow not appear in left and top for chrome browser.
.div_wrapper {
box-shadow: 4px 4px 15px -6px black;
-moz-box-shadow: 4px 4px 15px -6px black;
-webkit-box-shadow: 4px 4px 15px -6px black;
background: #fff;
padding: 10px;
width: 400px;
height: 400px;
margin-bottom: 10px;
}