html, body {
	height: 100%;
}

body {
	margin: 0;
	display: flex;
	flex-direction: column;
	font-family: 'Roboto', 'Calibri', sans-serif;
	font-size: 1em;
	font-weight: normal;
	color: #333333;
}

.content {
	flex: 1 0 auto;
	background-color: #ffffff;
}

.wrapper {
	margin: 0 3.5em;
}

.center {
	margin-left: auto;
	margin-right: auto;
justify-content: center;
        align-items: center;
}

/* Nagivation Menu */
nav {
	background-color: #000000;
}

nav ul {
	list-style-type: none;
	margin: 0;
	padding: 0;
	overflow: hidden;
}

nav li {
	margin: 0;
	float: left;
}

nav li a {
	display: block;
	padding: 25px;
//	text-align: center;
	text-decoration: none;
	color: white;
	font-size: 20px;
}

.drpdwn-menu a {
	font-size: 18px;
}

.drpdwn-menu {
	display: none;
	position: absolute;
	z-index: 1;
	background-color: #000000;
}

nav li a:hover, .drpdwn a:hover {
	background-color: #36669f;
	opacity: 1.0;
}

.drpdwn:hover .drpdwn-menu {
    display: block;
}

.announcement {
	background-color: #371346;
	padding: 1em;
	border-bottom: 2px solid #0e0b20;
}

.annoucement a {
	color: white;
	text-decoration: none;
	font-size: 1.2em;
}

.close {
	background-color: transparent;
	color: white;
	border: none;
	font-size: 1.2em;
	float: right;
}

/* Text */
h1 {
	font-size: 2.5em;
	font-weight: bold;
	margin: 1em 0;
}

.title {
	margin: auto;
}

.smtitle {
	font-size: .8em;
}

h2 {
	font-size: 1.7em;
	font-weight: normal;
	margin: 1em 0 0 0;
	color: #36669f;

}

h3 {
	font-size: 1.2em;
	font-weight: normal;
}

p {
	margin: 15px 0;
}

.jbr {
	display: inline-block;
}
ul {
	margin: 15px 0;
}

ul li {
	margin: 2.5px 0;
}

p a {
	color: #36669f;
	text-decoration: none;
}

p a:hover {
	text-decoration: underline;
}

/* Home */
.banner {
	/*overflow:auto;*/
	position: relative;
	width: 100%;	
	border-bottom: 3px solid #27116e;
	background-color:black;
}

.sep {
	overflow: hidden;
}
.banner img {
	object-fit: contain;
	max-width: 100%;
	min-height: 5em;
	float: left;
}
.banner h1 {
	font-family: 'Lexend', sans-serif;
	font-optical-sizing: auto;
	font-style: normal;
	font-weight:700;
	font-size: 7vw;
	max-width: 58%;
	padding: 30px;
	margin: 0;
	margin-left: 1%;
	color: #ededed;
	position: absolute;
	top: 50%;
	left: 55%;
	transform: translate(0, -50%);
	text-align: left;
	text-shadow: 0px 0px 25px #0088ff;
}

#home_banner {
	content:url('https://cxc.harvard.edu/cdo/cdu2026/imgs/chandra_cdu_banner_2.png');
        display: block;
        margin: auto;
}

#banner {
	content:url('https://cxc.harvard.edu/cdo/symposium_2024/imgs/25years_web_banner_thin.png');
	display: block;
	margin: auto;
	min-width:1300px;
}

#smbanner {
	display: block;
	margin: auto;
	height: 250px;
}

.home {
	width: 75%;
	margin: auto;
}

.home h1, .home h2 {
	text-align: left;
}


.title h1 {
	text-align: left;
	line-height: 1.2em;
}


.home p, .home ul {
	text-align: justify;
	margin: 15px auto;
}

.home ul {
	text-align: left;
	list-style-type:none;
}
.home h1{
	color:#36669f;
	margin-bottom:0;
}
.smbanner {
	color: #ffffff;
	background-color: #000000;
	font-family: Avenir, sans-serif;
	width: 100%;
	text-align: center;
	padding: .5em;
	font-size: 1.1em;
}


.dates span {
	font-weight:700;
	color:#36669f;
}
.dates td {
	padding-top:10px;
}

#reg_buttons {
        display:flex;
}

.button {
display:flex;
flex-direction:column;
justify-content:center;
align-items:center;
text-decoration:none;
  background-image: linear-gradient(92.88deg, #36669f, #2a3a75);
  border-radius: 8px;
  border: 1px grey solid;
  box-sizing: border-box;
  color: #FFFFFF;
  cursor: pointer;
  font-family: sans-serif;
  font-size: 16px;
  font-weight: 500;
  height: 4.5rem;
  margin-top:20px;
  margin-right:10px;
  padding: 0 1.6rem;
  text-align: center;
  text-shadow: rgba(0, 0, 0, 0.25) 0 3px 8px;
  transition: all .5s;
  user-select: none;
  -webkit-user-select: none;
  touch-action: manipulation;
}
.button:hover {
  box-shadow: rgba(80, 63, 205, 0.5) 0 1px 30px;
  text-decoration:none;
  transition-duration: .1s;
}
.button span {
	font-size:80%;
}

/*.poster_container {display:flex;}
.poster {display:flex;
	flex-direction:column;
	align-items:center;}

.poster img {width:95%;
	margin-top:20px;}
*/
.soc td{
	padding-top:4px;
	padding-right:20px;
}
#soc,#loc {
	padding-bottom:6px;
}


/* Pages */
#abstract {
	width: 750px;
	height: 1200px;
	margin-left: -35px;
}

#map {
	width: 100%;
	height: 480px;
}
#iframe {position:relative;
	width:100%;
}

/* Footer */
footer {
	background-color: #000000;
	background-image: none;
	flex-shrink: 0;
	margin-top: 5em;
}

.socmedia {
	margin-right: 15px;
}

.socmedia img {
	filter: invert(100%);
}

/* Mobile */
nav button {
	background-color: transparent;
	border: none;
	display: none;
}

nav img {
	width: 40px;
	height: 40px;
	margin: 5px;
}

#closeBtn {
	display: none;
	color: white;
	font-size: 1.5em;
	padding: 5px;
	margin-left: 220px;
}


@media screen and (max-width: 1200px) {    
	nav button {
		display: block;
	}
	nav ul {
		height: 100%;
		width: 0;
		position: fixed;
		z-index: 1;
		top: 0;
		left: 0;
		background-color: #000000;
		overflow-x: hidden;
		overflow-y: auto;
	}

	nav li {
		float: none;
	}
	
	nav li a {
		text-align: left;
		padding: 15px 20px;
	}
	
	.drpdwn-menu {
		display: block;
		position: static;
		padding-left: 15px;
	}
	
	.home p, .home ul {
//		width: 75%;
	}

	#abstract {
		width: 600px;
	}
}

@media screen and (max-width: 1000px) {
        .banner h1 {
                padding: .5em;
        }
}

@media screen and (max-width: 650px) {

.drpdwn-menu {
	background-color: #36669f;
}
	#home_banner {
	filter:brightness(0)
	}
	.banner h1 {
        	font-size: 6vw;
	}	
	.home {
		width: 90%;
		margin: auto;
	}

	.wrapper {
		margin: 0 2em;
	}
	

	#abstract {
		width: 300px;
	}

	.sep {
		width: 100%;
		display: block;
		margin: auto;
		padding: 0;
		/*overflow: inherit;*/
		text-align: center;
		height:15vw;
	}
	.banner h1 {
	position: absolute;
	top:20%;
	left:auto;
	transform: inherit;
	padding: 0;
	text-align: center;
	font-size: 9.5vw;
	max-width: 100%;
	}

	.banner img {
	max-width: 100%;
	}
}

/* Show/Hide */
.show {
	width: 250px;
}

.hide {
	width: 0;
}