#HybridOffice_ID #banner:before{background-image:url("https://gallery.synology.com/image/GiBgFsJ/1x");background-repeat:no-repeat;background-size:cover;background-position:center}@media all and (-webkit-min-device-pixel-ratio: 1.5), all and (-o-min-device-pixel-ratio: 3 / 2), all and (min--moz-device-pixel-ratio: 1.5), all and (min-device-pixel-ratio: 1.5){#HybridOffice_ID #banner:before{background-image:url("https://gallery.synology.com/image/GiBgFsJ/2x")}}