div.content-container div.resource-header > header { /* Kopfzeile eines Kursbausteins */
	background-color: #efefef;
	margin-bottom: 0px;
}

div.menu-container nav a { /* Verlinkungen in der Kursnavigation */
	background-color: #fff;
}

div.menu-container nav a.jstree-clicked { /* aktuell gewähltes Element der Kursnavigation */
	background-color: #efefef;
	font-weight: bold;
}

div.menu-container nav ul > li#idefficiency {
	display: none;
}

div.menu-container nav ul > li#idtreemaster {
	background-color: #efefef;
}

div.menu-container nav ul > li#idtreemaster > ul > li:nth-child(2),
div.menu-container nav ul > li#idtreemaster > ul > li:nth-child(4) {
	background-color: #fff; 
}

div.menu-container nav ul > li#idtreemaster > ul > li:nth-child(2) > i {
	background-color: #efefef;
}