.hte-image-grid .b0 { background-image: url(/fileadmin/_processed_/4/8/csm_Online-Tagung_26589d2c3d.jpg); }@media screen and (min-width: 640px) { .hte-image-grid .b0 { background-image: url(/fileadmin/_processed_/4/8/csm_Online-Tagung_1d9ef60a82.jpg); } }@media screen and (min-width: 960px) { .hte-image-grid .b0 { background-image: url(/fileadmin/_processed_/4/8/csm_Online-Tagung_4e8b136d5c.jpg); } }