.byline {
	margin-top: -3em;
	font-style: italic;
	text-align: right;
}

.superscript { position: relative; top: -0.5em; font-size: 80%; }

body {
	background-color: #fff;
	margin-top: 40px;
}

h1, h2, h3, h4, h5, h6, p {
  font-family: "Titillium Web", Helvetica, sans-serif;
}
p, h1, h2, h3, h4, h5, h6 {
    margin-top: 0;
    margin-bottom: 0;
    padding-bottom: 1.2rem;
    background-color: rgba(255, 255, 255, 1);
}

h1 {
	font-size: 3.3rem;
}
h2 {
	padding-top: 58px;
	margin-top: -42px;
}

p {
  font-size: 1.1rem;
  line-height: 1.8rem;
}

ul, ol, dl {
    font-family: titillium web;
}

a {
    color: #3d5ee4;
    text-decoration: underline;
}
a:hover, a:focus {
    outline: none;
}

[name] {
	text-decoration: none;
}

.caption {
	font-size: 0.8rem;
	font-style: italic;
}

.headerimg {
    background-image: url(../img/refraction_pattern.svg);
    background-size: cover;
    background-repeat: no-repeat;
    width: 100%;
    height: 400px;
    display: inline-block;
    position: absolute;
    z-index: -1;
    margin-top: -20px;
}

.header {
    background-color: rgba(255, 255, 255, 1);
    text-align: center;
    padding: 4% 2%;
}
.container {
    max-width: 60rem;
    padding-left: 1rem;
    padding-right: 1rem;
    margin-left: auto;
    margin-right: auto;
    padding-top: 4%;
}
.container > * {
    padding-left: 12%;
    padding-right: 12%;
}
.imagecenter {
	position: relative;
    width: 100%;
}

img {
	margin: 0 auto 1rem;
}

.diagram {
	padding: 4% 0;

}
nav {
    border-bottom: 3px solid #000000;
    text-align: center;
    height: 42px;
    position: fixed;
    width: 100%;
    margin-top: -40px;
    background-color: white;

}
.navitem {
    padding: 0 14px;
    font-size: 15px;
    font-weight: 700;
    color: #3a3a3a;
    text-decoration: none;
}
nav > ul {
    list-style: none;
    margin: 0 auto;
    padding: 0;
    display: inline-block;
}

nav > ul > li {
    display: inline-block;
    margin: .5rem;
    padding-bottom: 0.5rem;
}