#page-header-main { background-image: url(/fileadmin/_processed_/b/f/csm_Rum-1920px_70c992c0c5.jpg); }@media screen and (min-width: 640px) { #page-header-main { background-image: url(/fileadmin/_processed_/b/f/csm_Rum-1920px_33cf44f087.jpg); } }