body {
  padding: 1.5rem;
  font-family: "Source Sans Pro", sans-serif;
  font-weight: 400;
	font-size: 1.125rem;
	line-height: 1.75;
  color: #222;
  background-color: #e5e5e5;
}
.container {
  margin: 0 auto;
  max-width: 1280px;
  background-color: #fff;
}

header {
  padding: 1.5rem;
}
header img {
  margin-right: 1.0rem;
  float: left;
}
header p#title {
	font-family: "Open Sans", Arial, sans-serif;
  margin: 0;
	font-size: 2.5rem;
	font-weight: 300;
	line-height: 1.2;
	letter-spacing: -.1rem;
}
header p#claim {
  margin-top: 0.25rem;
  margin-bottom: 0;
  font-size: 1.2rem;
}

h1, h2, h3, h4, h5, h6 {
  font-family: "Open Sans", Arial, sans-serif;
  font-weight: 400;
  margin: 1.5rem 0 1.0rem 0;
  clear: both;
}
h1 { font-size: 2.6rem; line-height: 1.2;  letter-spacing: -.1rem;}
h2 { font-size: 2.0rem; line-height: 1.25; letter-spacing: -.1rem; }
h3 { font-size: 1.5rem; line-height: 1.3;  letter-spacing: -.1rem; }
h4 { font-size: 1.3rem; line-height: 1.35; letter-spacing: -.08rem; }
h5 { font-size: 1.2rem; line-height: 1.5;  letter-spacing: -.05rem; }
h6 { font-size: 1.1rem; line-height: 1.6;  letter-spacing: 0; }

nav, footer {
  background-color: rgba(255, 153, 51, 0.75);
}
nav a, nav a:hover, nav a:focus,
footer a, footer a:hover, footer a:focus {
  padding: 1.5rem;
  line-height: 4.0rem;
  height: 2rem;
  color: #222;
  text-decoration: none;
}
nav a:hover, footer a:hover {
  text-decoration: underline;
}
nav a#menu-mobile {
  display: none;
  text-align: right;
}
nav ul, footer ul {
	margin: 0;
  list-style-type: none;
}
nav ul li, footer ul li {
	position: relative;
  display: inline-block;
}
nav ul li.active {
	background-color: rgba(255, 255, 255, 0.25);
}
nav ul li:hover,
nav ul li:focus,
footer ul li:hover,
footer ul li:focus,
nav ul li:hover ul li a:hover,
nav ul li:focus ul li a:focus {
  background-color: #ff9933;
}
nav ul li ul {
	position: absolute;
	background-color: rgba(255, 153, 51, 0.75);
	border-top: 1px solid #fff;
	padding: 0px;
	left: 0;
	display: none;
}
nav ul li:hover ul, nav ul li:focus ul { display: block; }
nav ul li ul li {
	border-bottom: 1px solid rgba(255, 255, 255, 0.5);
}
nav ul li:hover ul li a,
nav ul li:focus ul li a {
  width: 10rem;
  padding: 0.75rem;
	color: #222;
	display: inline-block;
	line-height: inherit;
}

footer {
	text-align: right;
	clear: both;
}

main {
	width: 100%;
	max-width: 960px;
	margin: 0 auto;
	padding: 1.5rem;
}

p {
	margin-bottom: 1rem;
}

a {
	color: #ff9933;
	text-decoration: underline;
}

ul, ol {
	margin: 0 0 1rem 1.5rem ;
}

ul {
	list-style-type: inherit;
}

ol {
	list-style-type: decimal;
}

p > img {
	float: left;
	margin: 0 1.5rem 1.5rem 0;
  max-width: 250px;
}

table {
  margin-bottom: 1rem;
}

tr th:empty {
  display: none;
}

th, td {
  border: 1px solid black;
}

th {
  padding: 0.5em 1em;
  background-color: rgba(255, 153, 51, 0.75);;
  font-weight: bold;
}

td {
  padding: 0.25em 1em;
}

div.conference p {
  margin-top: 0;
  margin-bottom: 0;
}

em {
  font-style: italic;
}

strong {
  font-weight: bold;
}

@media (max-width: 45em) {
  body {
    padding: 0;
  }
  .container {
    margin: 0;
  }
  h1 { font-size: 2.0rem; }
  h2 { font-size: 1.6rem; }
  h3 { font-size: 1.4rem; }
  h4 { font-size: 1.2rem; }
  h5 { font-size: 1.1rem; }
  h6 { font-size: 1.0rem; }

  nav {
    position: relative;
  }

  nav ul {
    background-color: rgba(255, 153, 51, 0.75);
    width: 100%;
  }

  nav a#menu-mobile {
    display: inherit;
    padding: 1rem;
		line-height: inherit;
		text-decoration: none;
  }
  nav a#menu-mobile:focus {
    pointer-events: none;

  }
	nav a#menu-mobile ~ ul {
    position: absolute;
    z-index: 1;
    display: inline-block;
    padding: 0;
    opacity: 0;
    visibility: hidden;
    transition: visibility 0.5s;
  }
	nav a#menu-mobile:focus ~ ul {
    pointer-events: auto;
    opacity: 1;
		visibility: visible;
	}
	nav a {
		font-size: 1.25rem;
	}
	nav ul li, footer ul li {
	  display: inherit;
		width: 100%;
		border-top: 1px solid #fff;
		text-align: center;
	}
  nav ul li ul {
    position: relative;
    width: 100%;
  }

  p > img {
    float: none;
    margin-bottom: 1.5em;
    display: block;
    margin: 0 auto;
    max-width: 250px;
  }

}