* {
	color: white;
	font-family: Helvetica, Arial, sans-serif;
}

:root {
	background-color: black;
}

html, body {
	height: 100%;
}

body {
	margin: 0;
}

video#background {
	object-fit: cover;
	width: 100vw;
	height: 100vh;
	position: fixed;
	top: 0;
	left: 0;
}

button#muteUnmute {
	display: block;
	position: fixed;
	left: 2em;
	bottom: 2em;
	appearance: none;
	border: 0.2em solid #ffcc00;
	background-color: #ffcc00;
	color: black;
	z-index: 1;
}

button#muteUnmute.js {
	border: 0.2em solid #767676;
	background-color: #efefef;
}

button#muteUnmute.js:hover {
	border: 0.2em solid #4f4f4f;
	background-color: #e5e5e5;
}

button#muteUnmute.js:active {
	border: 0.2em solid #8d8d8d;
	background-color: #f5f5f5;
}

header, section {
	position: relative;
	height: 100%;
	text-align: center;
	display: flex;
	align-items: center;
	justify-content: center;
	unicode-bidi: isolate;
}

section {
	background: rgba(0, 0, 0, 0.8);
}

img {
	max-width: 100vw;
	max-height: 100vh;
}

section img {
	max-width: 90%;
	max-height: 90%;
}