body {
	display: grid;
	grid-template-rows: 12em auto;
	min-height: 100vh;
}

.rtc {
	display: grid;
	grid-template-rows: 1fr min-content;
	grid-gap: 1em;
	padding: 1em;
	background: #f8f8f8;
}

.rtc-controls {
	text-align: center;
}

.rtc-videos {
	display: grid;
	grid-template-columns: repeat(auto-fit, minmax(20%, 1fr));
	align-content: center;
	justify-items: center;
	grid-gap: 1em;
	flex-grow: 1;
	flex-shrink: 1;
	/* video may overflow */
	overflow: hidden;
}

.rtc-videos video {
	background-color: black;
	width: 100%;
}

video.mirrored {
	transform: scale(-1, 1);
}

.chat {
	display: grid;
	grid-template-rows: 1fr min-content;
	grid-gap: 1em;
	padding: 1em;
	min-width: 18em;
	border: 0 solid #ccc;
	border-top-width: 1px;
}

.chat-history {
	width: 100%;
	overflow: auto;
	margin: 0;
	padding: 0;
	margin-bottom: 1em;
	min-height: 8em;
}

.chat-history li {
	display: block;
	margin: 1em 0;
}

.chat-form {
	display: grid;
	grid-template-columns: 1fr min-content;
	grid-gap: 1em;
}

@media (min-width: 40em) {
	body {
		grid-template-columns: 3fr minmax(min-content, 1fr);
		grid-template-rows: 1fr;
	}
	.chat {
		border-top-width: 0;
		border-left-width: 1px;
	}
}