codice:
outline:  none;border-bottom-style:none;background-color:transparent;background-repeat:no-repeat  !important;background-position:center !important;background-position:  center !important;position:fixed !important;z-index:-3 !important;top:0  !important;left:0 !important;width:100% !important;height:8%  !important;-webkit-background-size: cover ;-moz-background-size:  cover;-o-background-size: cover;background-size: cover  !important;border:0;