.kraftwerk {
	background-image: url(img/motiv_kraftwerk.jpg);
}
.menschen {
	background-image: url(img/motiv_menschen.jpg);
}
.fabrik {
	background-image: url(img/motiv_fabrik.jpg);
}
.rohre {
	background-image: url(img/motiv_rohre.jpg);
}
.helme {
	background-image: url(img/motiv_helme.jpg);
}
.chaos {
	background-image: url(img/motiv_chaos.jpg);
}
.tanks {
	background-image: url(img/motiv_tanks.jpg);
}
.autos {
	background-image: url(img/motiv_autos.jpg);
}
.gerippe {
	background-image: url(img/motiv_gerippe.jpg);
}
.isolator {
	background-image: url(img/motiv_isolator.jpg);
}
.zucker {
	background-image: url(img/motiv_zucker.jpg);
}
.pipette {
	background-image: url(img/motiv_pipette.jpg);
}