 <style>
        body {
            font-family: Arial, sans-serif;
            margin: 0;
            padding: 20px;
        }
        .nav-menu {
            width: 150px;
            border: 1px solid #b8d6e6;
            border-radius: 5px;
            overflow: hidden;
        }
            .nav-menu a {
                display: block;
                padding: 5px 15px;
                text-decoration: none;
                color: #333;
                border-bottom: 1px solid #b8d6e6;
                /*background: linear-gradient(to bottom, #e6f3f9, #c8e6f9);*/
                /* background: linear-gradient(to bottom, #b4dbf2, #d6dcde);*/
                background: linear-gradient(to bottom, #b4dbf2, #NaNeef1);
                transition: background 0.3s;
            }
        .nav-menu a:last-child {
            border-bottom: none;
        }
        .nav-menu a:hover, .nav-menu a.active {
            background: linear-gradient(to bottom, #c8e6f9, #a8d8f9);
        }
    </style>