/*导航栏*/
body{
	overflow-x: hidden;

}
iframe {
	overflow: hidden;
}
.navbar {
	height: 50px;
	background-color:rgb(92,101,116);
	;
}
.navbar-nav{
	margin-bottom: -18px !important;
}

.navbar-link{
	color: #fff;
	display: block;
	margin-top: -5px;
	font-family: 'Oswald', sans-serif;
	font-size: 0.9em;
}
a:hover {
	color:black;
  }


.collapse {
	text-transform: uppercase;
}

.navbar .navbar-brand {
	font-size: 1.5em;
	font-family: 'Oswald', sans-serif;
}

.navbar .navbar-collapse {
	font-size: 0.8em;
	font-family: 'Oswald', sans-serif;
}
.ml-auto{
	margin-right:0px !important;
}
.jumbotron {
	height: 600px;
	padding:0px;
	/* background-image: url("images/banner.jpg");
	background-position: top;
	background-size: cover;
	border-radius: 0px;
	text-align: center; */
}

.display-4 {
	color: black;
	background-color: white;
	margin-left: 29%;
	margin-right: 29%;
	margin-top: 100px;
	padding-top: 10px;
	padding-bottom: 10px;
	font-family: 'Oswald';
	font-weight: 500;
	font-size: 45px;
}

.jumbotron .lead {
	margin-top: 50px;
	margin-left: 20%;
	margin-right: 20%;
	color: white;
	font-size: 1.1em;
	background-color: black;
	font-family: 'Oswald';
	font-weight: 300;
}

/*第一部分*/
.section1 {
	margin-top: 50px;
	margin-bottom: 100px;
	text-align: center;
}

.section1 .title {
	font-family: 'Oswald';
	padding-bottom: 20px;
}

.section1 .content {
	font-family: 'v';
}

/*第二部分*/
.section2 {
	margin-top: 50px;
	margin-bottom: 100px;
	text-align: center;
}

.section2 .title {
	font-family: 'Oswald';
	padding-bottom: 20px;
}

.section2 .content {
	font-family: 'Oswald';
}

/*第三部分*/
.section3 {
	margin-top: 50px;
	margin-bottom: 100px;
	text-align: center;
}

.section3 .title {
	font-family: 'Oswald';
	padding-bottom: 20px;
}

.section3 .content {
	font-family: 'Oswald';
}

/*visualization*/
.visualization {
	padding-top: 50px;
	padding-bottom: 50px;
	color: white;
	background-color: rgb(65,65,65);
	margin-top: 50px;
	margin-bottom: 100px;
	text-align: center;
}

.visualization .title {
	font-family: 'Oswald';
	padding-bottom: 20px;
}

.visualization .content {
	font-family: 'Oswald';
}

/*第四部分*/
.section4 {
	margin-top: 50px;
	text-align: center;
}

.section4 .title {
	font-family: 'Oswald';
	padding-bottom: 20px;
}

.section4 .content {
	font-family: 'Oswald';
}




.about {
	height: 300px;
	padding-top: 50px;
	text-align: center;
	color: lightgrey;
	background-color: rgb(10,10,10);
}

.about .title {
	font-family: 'Oswald';
	text-transform: capitalize;
	padding-bottom: 20px;
}

.about .content {
	font-family: 'Oswald';
}

.number {
	color: orange;
	font-size: 2em;
	font-weight: 700;
}

.food-icon {
	opacity: 0.5;
}

.affect {
	color: orange;
	font-weight: 700;
}

.bubble-item {
	margin: 10px 20px 10px 20px;
}

.bubble:nth-of-type(1) {
	margin-top: 50px;
}

.bubble-item:hover {
	transform: scale(1.1);
}

.left-align {
	text-align: left;
}

.row {
	margin-top: 50px;
	padding: 20px 0px 20px 0px;
	border: 1px dashed grey;
}

.whatisgi {
	font-size: 1.2em;
}

.video {
	margin-left: 35%;
}

.wrapper{
	width: 100vw;
	text-align: center;
}

.map{
	width:100%;
	height: 100vh;
	display: inline-block;
}

.nav-item{
	margin-right:50px;
	box-sizing: border-box;
	/* width: 70px; */
	height:40px;
	transition:all 0.4s linear;
}
.nav-item.active1:after{
	content:'';
	display:block;
	/* width:78px; */
	height: 3px;
	background:#000;
}
.nav-item:nth-child(5){
	margin-right:0px;
}
.osac-map{
	width:100%;
	height: 100%;
}

nav > .crcs-logo{
	width: 200px;
	height:48px;
	background:url(./images/crsc-logo-black.png) no-repeat;
	background-size: 150px 36px;
}
nav > a > span.subtitle{
	font-size: 0.75em !important;
	margin-left: 0.5em;
}
.black-a{
	color:#fff;
	text-decoration: underline;
}
footer{
	display: flex;
	flex-direction: row;
	justify-content: space-around;
	background-color:#252325;
	color:#c1c1c1;
	overflow: hidden;
	padding-top:20px;
	width:100%;
}

ul{
	font-family:"Helvetica Neue", Helvetica, Arial, sans-serif;
	list-style:none;
	font-size: 14px;
	font-weight: 500;
}
ul.footer-3 > li{
	width:20%;
	display: inline;
}
ul.footer-3 > li:nth-child(1)::after{
	content:'';
	margin-left:8px;
	display: inline;
	width:10px;
	height:10px;
	border-right:2px solid #c1c1c1;
}
ul.footer-3 > li:nth-child(2){
	margin-left:4px;
}
.text{
	font-family: 'Avenir Light', Verdana, Geneva, sans-serif;
}

.head{
	font-family: 'Avenir Light', Verdana, Geneva, sans-serif;
}

.category{
	font-family: 'Avenir Light', Verdana, Geneva, sans-serif;
	font-size: 16px;
}

.country{
	/* font-family: 'Avenir Light', Verdana, Geneva, sans-serif; */
	font-size: 1.2em;
	font-family: 'Oswald', sans-serif;
	color: grey;
	display: block;
	/* text-emphasis-color: grey; */
	text-align: center;	
}