.hte-image-grid .b0 { background-image: url(/fileadmin/_processed_/b/c/csm_Seminar_0512146d64.jpg); }@media screen and (min-width: 640px) { .hte-image-grid .b0 { background-image: url(/fileadmin/_processed_/b/c/csm_Seminar_2252c19670.jpg); } }@media screen and (min-width: 960px) { .hte-image-grid .b0 { background-image: url(/fileadmin/_processed_/b/c/csm_Seminar_56b9d08719.jpg); } }