Template:YouTube/styles.css

.video {
	padding: 3px;
}

.video-with-caption {
	background-color: #f8f9fa;
	border: 1px solid #c8ccd1;
	font-size: 94%;
	padding: 3px;
	margin-bottom: 24px;
}

@media (max-width: 768px) {
	.video {
		width: 100% !important;
	}

	.video iframe {
		width: 100% !important;
	}
}