.menu-nav ul {
            list-style-type: none;
            padding: 0;
            margin: 0;
            background-color: blue;
            display: flex;
        }

        .menu-nav li {
            position: relative;
            border-right: 1px solid white; 
        }

        .menu-nav li a {
            display: block;
            color: white;
            text-decoration: none;
            padding: 10px 20px;
            white-space: nowrap;
            text-align: center;
        }

        .menu-nav li:hover > a {
            background-color: oldlace;
            color: black;
        }

        .menu-nav ul ul {
            display: none;
            position: absolute;
            top: 100%;
            left: 0;
            flex-direction: column;
            width: max-content;
            min-width: 100%;
        }

        .menu-nav ul ul li {
            border-right: none;
            border-bottom: 1px solid white;
        }

        .menu-nav li:hover > ul {
            display: flex;
        }

        .menu-nav ul ul ul {
            top: 0;
            left: 100%;
        }