body
{
	margin: auto;
	background-color: #C0C0C0;
}

div.center
{
	text-align: center;
}

label.source
{
	font-size: 12px;
}

img
{
	-moz-border-radius: 8px;
    -webkit-border-radius: 8px;
    -khtml-border-radius: 8px;
    border-radius: 8px;
    width: 50%;
}

img:hover
{
	position: relative; 
    top: -5px;
	left: -5px;
	box-shadow: 6px 6px 0px #808080;
} 
	
div.header ul {
    list-style-type: none;
    margin: 0;
    padding: 0;
    overflow: hidden;
    background-color: #333;
}

div.header ul li a{
    display: inline-block;
    color: white;
    text-align: center;
    padding: 14px 16px;
    text-decoration: none;
}

div.header ul li {
    float: left;
}

div.header ul li a:hover{
    background-color: orange;
}