.hte-image-grid .b0 { background-image: url(/fileadmin/_processed_/c/4/csm_Online_Kongress_3b66432b63.jpg); }@media screen and (min-width: 640px) { .hte-image-grid .b0 { background-image: url(/fileadmin/_processed_/c/4/csm_Online_Kongress_3c0d3d306e.jpg); } }@media screen and (min-width: 960px) { .hte-image-grid .b0 { background-image: url(/fileadmin/_processed_/c/4/csm_Online_Kongress_60bbb2c8d9.jpg); } }