.navbar-brand-centered {
    position: absolute;
    left: 50%;
    display: block;
    width: 160px;
    text-align: center;
    background-color: transparent;
}
.navbar>.container .navbar-brand-centered, 
.navbar>.container-fluid .navbar-brand-centered {
    margin-left: -80px;
}

.btn-space {
    margin-right: 8px;
    margin-bottom: 8px;
}

.navbar-default .navbar-brand:hover {
	color: silver;
}

.navbar-default {
    background-image: linear-gradient(to bottom,  #707070 0,  #484848 100%);
    border-color:  #484848;
}

.navbar-default .navbar-nav > li > a {
    color: whitesmoke;
    text-shadow: none;
}

.navbar-default .navbar-nav > li > a:focus, .navbar-default .navbar-nav > li > a:hover  {
    color: silver;
}

.navbar-default .navbar-brand {
	color: whitesmoke;
}

.navbar-default .navbar-nav > .active > a, .navbar-default .navbar-nav > .active > a:hover, .navbar-default .navbar-nav > .active > a:focus {
    background-image: none;
    background-color: #484848;
    color: white;
    text-shadow: none;
}

.btn-default.active, .btn-default:active {
    background-color: #484848;
    border-color: #484848;
    background-image: none;
}

body {
	padding-top: 70px;
	background-color: whitesmoke;
	font-family: "fira-sans", sans-serif;
}

a {
	color: #333;
}

a :hover {
	color: gray;
	text-decoration: none;
}

.imagetiles a:hover {
	color: gray;
	text-decoration: none;
}

.btn-default {
	text-shadow: none;
	background-image: linear-gradient(to bottom,#707070 0,  #484848 100%);
	color: whitesmoke;
	border-color: #707070;
}

.btn-default:focus, .btn-default:hover {
    background-color: transparent;
    background-position: 0;
    color: silver;
    border-color: #707070;
 }

.mask {
	width: 100%;
	padding-bottom: 84%;
	background-size: cover;
	background-repeat: no-repeat;
	background-position: center center;
}

.navbar-brand {
	font-weight: 700;
	font-family: "rift-soft";
	font-size: 22px;
	text-shadow: none;
}

.filter .btn {
	font-size: 13px;
/*	text-transform: uppercase;
*/}

.imagetiles h5 {
	font-weight: bold;
}

#index {
background: url(../images/wustl.jpg) no-repeat center center fixed; 
  -webkit-background-size: cover;
  -moz-background-size: cover;
  -o-background-size: cover;
  background-size: cover;
  padding-top: 50px;
}

.jumbotron {
	background: -webkit-linear-gradient(bottom, transparent 0%, #202020 100%);
	background-color: transparent;
	padding-bottom: 45px;
	padding-top: 15px;
}

.index-buttons {
	display: block;
	position: fixed;
	width: 100%;
	bottom: 5%;
}

.jumbotron h2 {
	text-align: center;
	font-size: 22px;
	color: white;
}

.jumbotron h2 small {
	color: white;
	font-size: 62%;
}