@media only screen and (-webkit-min-device-pixel-ratio: 2), 
only screen and (min-device-pixel-ratio: 2) {header .navbar-brand img.logo_normal,header .navbar-brand img.logo_after_scroll{display:none!important;}header .navbar-brand img.logo_retina:not(.logo_after_scroll){display:block!important;-webkit-background-size:100%;-moz-background-size:100%;-o-background-size:100%;background-size:100%;}header.header_after_scroll .navbar-brand img.logo_retina.logo_after_scroll{display:block!important;-webkit-background-size:100%;-moz-background-size:100%;-o-background-size:100%;background-size:100%;}.footer_logo .footer_logo_normal{display:none!important;}.footer_logo .footer_logo_retina{display:block!important;-webkit-background-size:100%;-moz-background-size:100%;-o-background-size:100%;background-size:100%;max-height:35px;text-align:center;margin-left:auto;margin-right:auto;text-align:center;}.footer_logo.align-left .footer_logo_retina{margin-left:0;text-align:left;}.hide-on-start .navbar-brand img.logo_retina,header.header_after_scroll .navbar-brand img.logo_retina{display:none!important;}.upb_video_class{background-color:#343434;}}