h1, h2, h3, h4, h5, h6, p, a, ul, ol, li {
	/* https://systemfontstack.com/ */
	font-family: -apple-system, BlinkMacSystemFont, avenir next, avenir, segoe ui, helvetica neue, helvetica, Ubuntu, roboto, noto, arial, sans-serif;
	line-height: 1.4;
}
.mono {
	/* https://systemfontstack.com/ */
	font-family: Menlo, Consolas, Monaco, Liberation Mono, Lucida Console, monospace;
	font-size: .94em;
}

h1 {
	margin-top: 0;
}

body {
	background: #eee;
	margin: 0;
}

.container {
	max-width: 40rem;
	position: relative;
	margin: auto;
	background: white;
	padding: 2rem;
}

video {
	max-width: 100%;
}
img {
	max-width: 100%;
	padding-top: 2rem;
	padding-bottom: 2rem;
}
img.half {
	max-width: 49.5%;
	float: inline;
	padding: 0;
}