html, body { width: 100%; height: 100%; margin: 0; padding: 0; padding: env(safe-area-inset-top) env(safe-area-inset-right) env(safe-area-inset-bottom) env(safe-area-inset-left); }

#viewer { background-color: #FFFFFF; z-index:1; position:absolute; width: 100%; height: 100%; top: 0; }
#preloadContainer { z-index:2; position:relative; width:100%; height:100%; transition: opacity 0.5s; -webkit-transition: opacity 0.5s; -moz-transition: opacity 0.5s; -o-transition: opacity 0.5s;}

li:nth-child(4){
    display:none;
}