.comment{
	width:400px;
	background:#eee;
	border: 1px solid blue;
	margin:10px;
	padding:10px;
}

.comment .comment{
	width:auto;
	background:#eef;
}

.comment .comment .comment{
	background:#f2eeee;
}

.transparent{
	opacity: 0.5;
}