body {
    padding-top: 70px; 
}
.header {
	margin: 10px 0;
}
.thumbnail {
    margin-bottom: 5px;
	border: 0px none;
}
.thumbnail img {
	border: 1px solid #ddd;
	border-radius: 4px;	
	padding: 4px;
}
.thumbnail img:hover {
	border: 1px solid #0000ff;
}
.thumbnail_div {
	margin-bottom: 20px;
	text-align: center;
}
footer {
    margin: 50px 0;
}