@media (max-width: 767px) {
/* Start Viewport phone */
#body-content { height:350px; }
#document_1 { top:0px; left:0px; width:300px; height:155px; z-index:101; }
#document_2 { top:0px; left:0px; width:300px; height:155px; z-index:102; }
#document_3 { z-index:103; }
#document_4 { top:0px; left:0px; width:300px; height:155px; z-index:104; }
/* End Viewport phone */
}