.navbar.navbar-dark { background: #95051a linear-gradient(60deg, #b10000, #8b1139); }
.navbar.navbar-dark::before {
    content: '';
    display: block;
    position: absolute;
    z-index: -1;
    left: 230px;
    width: 56px;
    height: 54px;
    background: url('/images/holiday/christmas-tree.svg') no-repeat 0 0;
}
#sidebar .nav-item.sidebar-collapse a, #sidebar .nav-item.sidebar-collapse a:hover, #sidebar .nav-item.sidebar-collapse a:active { background-color: #c57575 }

@media (max-width: 767px) {
    .navbar.navbar-dark::before {
        left: 54px;
    }
}