#page-header-main { background-image: url(/fileadmin/_processed_/b/d/csm_Tee-Kaffee-1920px_66a2a50b0d.jpg); }@media screen and (min-width: 640px) { #page-header-main { background-image: url(/fileadmin/_processed_/b/d/csm_Tee-Kaffee-1920px_258e5d78a8.jpg); } }