.hte-image-grid .b0 { background-image: url(/fileadmin/_processed_/8/7/csm_Walk-Act_3e9a4255eb.jpg); }@media screen and (min-width: 640px) { .hte-image-grid .b0 { background-image: url(/fileadmin/_processed_/8/7/csm_Walk-Act_1020943f47.jpg); } }@media screen and (min-width: 960px) { .hte-image-grid .b0 { background-image: url(/fileadmin/_processed_/8/7/csm_Walk-Act_f746459c8a.jpg); } }