.hte-image-grid .b0 { background-image: url(/fileadmin/_processed_/b/9/csm_Vortrag_100c52a7f2.jpg); }@media screen and (min-width: 640px) { .hte-image-grid .b0 { background-image: url(/fileadmin/_processed_/b/9/csm_Vortrag_b1267c817a.jpg); } }@media screen and (min-width: 960px) { .hte-image-grid .b0 { background-image: url(/fileadmin/_processed_/b/9/csm_Vortrag_656deeea7d.jpg); } }