body{
		
		margin: 0;
	}
.thumbnails img {
		height: 80px;
		border: 4px solid #555;
		padding: 1px;
		margin: 0 10px 10px 0;
	}
#page-top {
		background-color: black;
	}
 
#intro{
		font-size: 36px;
		font-weight: 300;
		color: rgba(255,255,225,.7);
	}
.thumbnails img:hover {
		border: 4px solid #00ccff;
		cursor:pointer;
	}

.preview img {
		border: 4px solid #444;
		padding: 1px;
		width: 800px;
	}
	
header {
    position: relative;
    width: 100%;
    min-height: auto;
    text-align: center;
    -webkit-background-size: cover;
    -moz-background-size: cover;
    background-size: cover;
    -o-background-size: cover;
}