.ursprung {background-image : url('/tl_files/kepragroup/images/header/kepragroup_so_urs.jpg');} 
.kepragroup {background-image : url('/tl_files/kepragroup/images/header/kepragroup_so_kep.jpg');} 
.leistungen {background-image : url('/tl_files/kepragroup/images/header/kepragroup_so_lei.jpg');} 
.projekte {background-image : url('/tl_files/kepragroup/images/header/kepragroup_so_pro.jpg');} 
.kunden {background-image : url('/tl_files/kepragroup/images/header/kepragroup_so_kun.jpg');} 
.kontakt {background-image : url('/tl_files/kepragroup/images/header/kepragroup_so_kon.jpg');}