@media only screen and (-webkit-min-device-pixel-ratio: 2), (min-resolution: 192dpi) {
 .sidebar ul li {
 background:url(../images/sidebar-li-icon-black@2x.png) no-repeat 0 5px;
 background-size:4%;
}
.sidebar ul li:hover {
 background: url(../images/sidebar-li-icon-orange@2x.png) no-repeat 0 5px;
background-size:4%;
}
}
 @media screen and (max-device-width:480px) and (orientation:portrait) {
}