.favorites_icon {
    background-image: url(/static/impermo/nav-icons/favorites.png) !important;
    background-size: contain;
}
.swagger_icon {
    background-image: url(/static/impermo/nav-icons/swagger.png) !important;
    background-size: contain;
}
.productgrid_icon {
    background-image: url(/static/impermo/nav-icons/productgrid.png) !important;
    background-size: contain;
}