.hte-image-grid .b0 { background-image: url(/fileadmin/_processed_/8/7/csm_Dortmund_5a99ebd005.jpg); }@media screen and (min-width: 640px) { .hte-image-grid .b0 { background-image: url(/fileadmin/_processed_/8/7/csm_Dortmund_9c398a5125.jpg); } }@media screen and (min-width: 960px) { .hte-image-grid .b0 { background-image: url(/fileadmin/_processed_/8/7/csm_Dortmund_3ae62ba284.jpg); } }