boreal.zip_v0/cyanobacteria.css

@font-face {
	font-family: "Orbitron";
	src: url(../fonts/Orbitron-Regular.ttf) format("truetype");
}
@font-face {
	font-family: "Roboto";
	src: url(../fonts/Roboto-Regular.ttf) format("truetype");
}

/* start light mode styling */
:root {
	--text: darkslategrey;
	--border: lightgrey;
	--accent: teal;
	--bg: #dce3e1;
	--gradientTop: white;
	--gradientBottom: rgb(240, 248, 255, 0.8);
}
header {
	background: url("***light mode banner image***");
}
/* end light mode styling */

/* start dark mode styling */
@media (prefers-color-scheme: dark) {
	:root {
		--text: #cdd6f4;
		--border: #585b70;
		--accent: #f38ba8;
		--bg: #1e1e2e;
		--gradientBottom: #11111b;
		--gradientTop: #313244;
		a:link {
			color: #f38ba8;
		}
	}
	header {
		background: url("https://images.freeimages.com/images/large-previews/913/sea-3-1188161.jpg");
	}
}
/* end dark mode styling */

* {
	box-sizing: border-box;
}
body {
	padding: 10px;
	font-family: "Orbitron", sans-serif;
	color: var(--text);

	/* page background pattern */
	background-color: var(--gradientTop);
	background-image: linear-gradient(
			30deg,
			var(--bg) 12%,
			transparent 12.5%,
			transparent 87%,
			var(--bg) 87.5%,
			var(--bg)
		),
		linear-gradient(
			150deg,
			var(--bg) 12%,
			transparent 12.5%,
			transparent 87%,
			var(--bg) 87.5%,
			var(--bg)
		),
		linear-gradient(
			30deg,
			var(--bg) 12%,
			transparent 12.5%,
			transparent 87%,
			var(--bg) 87.5%,
			var(--bg)
		),
		linear-gradient(
			150deg,
			var(--bg) 12%,
			transparent 12.5%,
			transparent 87%,
			var(--bg) 87.5%,
			var(--bg)
		),
		linear-gradient(
			60deg,
			var(--bg) 25%,
			transparent 25.5%,
			transparent 75%,
			var(--bg) 75%,
			var(--bg)
		),
		linear-gradient(
			60deg,
			var(--bg) 25%,
			transparent 25.5%,
			transparent 75%,
			var(--bg) 75%,
			var(--bg)
		);
	background-size: 20px 35px;
	background-position:
		0 0,
		0 0,
		10px 18px,
		10px 18px,
		0 0,
		10px 18px;
}

.container {
	max-width: 70rem;
	margin: 5vw auto 12px auto;
	border: 6px ridge var(--border);
	outline: 3px solid var(--gradientTop);
	outline-offset: 4px;
	border-radius: 10px;
	display: flex;
	flex-wrap: wrap;
	padding: 5px;
	gap: 5px;

	/* container background pattern */
	background-color: var(--gradientBottom);
	opacity: 1;
	background-size: 10px 10px;
	background-image: repeating-linear-gradient(
		45deg,
		var(--bg) 0,
		var(--bg) 5px,
		var(--gradientBottom) 0,
		var(--gradientBottom) 50%
	);
}
/* these control the column widths */
.small {
	flex: 1 1 9%;
}
.large {
	flex: 1 1 82%;
}
.full {
	flex: 1 1 100%;
}
.half {
	flex: 1 1 49%;
}

header {
	background-size: cover;
	background-position: center;
	width: 100%;
	height: 120px; /* change banner height here*/
	border: 2px ridge var(--border);
	border-radius: 5px;
	position: relative;
}
header span {
	font-size: 2.5rem;
	position: absolute;
	bottom: 0;
	right: 10px;
	margin: 10px;
	font-weight: bold;
	text-shadow:
		1px 1px var(--text),
		-1px 1px var(--text),
		1px -1px var(--accent),
		-1px -1px var(--accent);
	color: var(--gradientTop);
}

nav {
	border: 2px ridge var(--border);
	border-radius: 5px;
	padding: 5px;
	background: linear-gradient(var(--gradientTop), var(--gradientBottom));
}
nav div {
	text-align: center;
	font-size: 1.25rem;
	margin: 5px 5px 10px 5px;
}
nav a {
	display: block;
	margin: 5px;
	background: linear-gradient(to right, var(--bg), var(--gradientBottom));
	border-radius: 5px;
	padding: 2px 7px;
	text-decoration: none;
}
nav a:link,
nav a:visited {
	color: var(--text);
}
nav a:hover,
nav a:focus {
	background: linear-gradient(
		to right,
		var(--bg),
		var(--gradientBottom),
		var(--gradientTop)
	);
}

/* optional button styling like in the preview */
div.small > img {
	display: block;
	margin: 5px auto;
	border: 2px ridge var(--border);
	border-radius: 5px;
}

section {
	border: 2px ridge var(--border);
	border-radius: 5px;
	background: linear-gradient(var(--gradientTop), var(--gradientBottom));
	padding: 5px;
}

footer {
	text-align: center;
	margin-bottom: 1vw;
	font-size: 0.8rem;
}
footer a {
	text-decoration: none;
}

h1,
h2,
h3,
h4,
h5,
h6 {
	font-family: "Orbitron", sans-serif;
	margin: 5px;
	line-height: 1.2;
}
h1 {
	font-size: 1.4rem;
	letter-spacing: 2px;
	font-weight: normal;
	text-align: center;
	border-bottom: 2px ridge var(--border);
	padding-bottom: 5px;
}
h2 {
	font-size: 1.25rem;
	font-weight: normal;
	text-align: center;
}
h3 {
	font-size: 1.1rem;
}
h4 {
	font-size: 1rem;
	color: var(--accent);
	padding-left: 12px;
}
p {
	font-family: "Roboto", sans-serif;
	margin: 5px;
	line-height: 1.2;
	text-indent: 1em;
}
/* prevents overflow on smaller screens */
img {
	max-width: 100%;
	margin-top: 0.25em;
}
pre {
	overflow-x: auto;
}
ul,
ol {
	font-family: "Roboto";
}
a:hover,
a:focus {
	font-style: italic;
}
a:visited {
	color: var(--accent);
}