:root {
	/* css color variables */
	--darkcolor: rgb(26, 38, 56);
	--lightcolor: whitesmoke;
	--highlight: rgb(104, 152, 224);
	/* --Tdarkcolor: rgba(26, 38, 56, 0.5); /* a alpha 1-100% opacity */
}

* {
	margin: 0;
	padding: 0;
	font-family: 'Arial', sans-serif;
}

/* Scrollbars */

/* Firefox */
html {
  scrollbar-color: var(--darkcolor) var(--lightcolor);
  scrollbar-width: thin;
}
/* WebKit and Chromiums */
::-webkit-scrollbar {
  width: 8px;
  height: 8px;
  background-color: var(--lightcolor);
}
::-webkit-scrollbar-thumb {
  background: var(--darkcolor);
}

body {
	color: var(--lightcolor);
	background: var(--darkcolor);
	width: 100%;
}

h1 { font-size: 54pt; }
h2 { font-size: 24pt; }
h3 { font-size: 20pt; }

.inline {
	display: inline;
	vertical-align: middle;
}
h2.inline {
	padding-right: 25px;
}

p {
	font-size: 16pt;
	/* text-indent: 12pt; */
	line-height: 1.5em;
	margin-top: 1.5em;
}

a {
	text-decoration: none;
	color: var(--highlight);
}

#top {
	display: flex;
	flex-direction: column;
	align-items: center;
	position: relative;
	min-height: 100vh;
	/* margin: 40pt 0 0 40pt;  /* top/bottom, right/left, or top right bottom left */
	z-index: 200;
}
#slogan {
	font-size: 24pt;
	margin-top:100pt;
	text-align:center;
	/* font-style: italic; */
}

#logo_img {
	margin: 20pt 30pt;
	width: 200pt;
}

.sponsor_img {
	margin: 5pt 5pt;
}

ul {
	padding-top: 24pt;
	list-style-type: none;
}
li {
	display: inline-block;
	font-size: 20pt;
	padding: 0 12pt;
	min-width: 72pt;
	text-align: center;
}
li:not(:last-child) {
	border-right: 4px solid white;
}

div.chapter {
	color: var(--lightcolor);
	display: block;
	position: relative;
	width: 85%;
	min-height: 100vh;
	margin-left: 50px;
	margin-top: 50px;
	overflow-y:visible;
	z-index: 200;
}

.submenu {
	display: block;
	margin-left: 50px;
}

/*
 .submenu>h3 {
 	padding-top: 50px;
}
 */

.emphasis {
	color: var(--highlight);
	font-weight: bolder;
	font-style: italic;
    padding-left: 50px;
}

#image_section {
	position: absolute;
	top: 0;
	left: 0;
	/* width: fit-content; */
	width: 100%;
	display: flex;
	flex-direction: column; /* row, column, *-reverse */
	justify-content: center; /* Flexbox main-axis */
	/* align-items: center; /* Flexbox cross-axis */
	z-index: 100;
}

@media only screen and (max-width: 1000px) {
	#image_section>img {
		width: 100vw;
	}
 }
@media only screen and (min-width: 1001px) {
	#image_section>img {
		height: 100vh;
	}
 }

#image_section>img {
		overflow-y: clip;
		margin-bottom: 50px;
		/* object-fit: cover; /* maintain aspect ratio */
		object-fit: contain; /* fit in space */
		opacity: 0.12;
}

#image_blend {
	position: fixed;
	top: 0;
	left: 0;
	width: 100%;
	height: 100%;
	background: var(--darkcolor);
	z-index: 102;
	mix-blend-mode: color;
}