1) To edit banner go Pages > edit the home page and the row background http://prntscr.com/pp92ax
2) “even after save is not showing” – Not just one element but all the elements on that page, and do not leave the element with the empty category field http://prntscr.com/pp9c8b Add the element only when you plan to show the category there. Then everything is ok http://prntscr.com/pp9dar
