#tutorial {
    width: 900px;
    height: 790px;
    margin: 25px auto 0;
}
#tutorial li {
	padding: 20px;
	background-color: #CBDDE7;
	list-style: none;
	box-shadow: 2px 2px 15px -3px;
	width: 43%;
	float: left;
	margin: 0 10px 20px 0;
}
#tutorial li a {
	text-decoration: none;
	font-size: 16px;
	font-weight: bold;
}