dd {
	margin-left: 0;
	font-weight: normal !important;
}

dl, div.math {
	margin: auto;
	width: 60%;
	border: 2px solid #000;
	padding: 1em;
}

div.math dl {
	width: 100% !important;
	padding: 1em 0 0 0 !important;
	
	border: none !important;
}

dl dt {
	font-weight: bold;
}

dl dd {
	margin-bottom: 1em;
}

div.img, div.youtube {
	margin: auto;
	text-align: center;
	font-size: 80%;
}



div.math {
	font-weight: bold;
}