.d4science_intro {
	top: 0;
	z-index: 2000;
	position: fixed;
	display: block ruby;
	padding: 10px;
	background: white;
	width: 100%;
}

.navbar-fixed-top {
	top: 100px !important;
}

.sidebar {
	top: 160px !important;
}

.navbar {
	margin-bottom: 40px !important;
}

.main {
	top: 90px;
}