.hte-image-grid .b0 { background-image: url(/fileadmin/_processed_/9/4/csm_Tagung_fb4ef972cf.jpg); }@media screen and (min-width: 640px) { .hte-image-grid .b0 { background-image: url(/fileadmin/_processed_/9/4/csm_Tagung_9f8ad67c6f.jpg); } }@media screen and (min-width: 960px) { .hte-image-grid .b0 { background-image: url(/fileadmin/_processed_/9/4/csm_Tagung_91da670a9d.jpg); } }