body {
    font-family: Arial, sans-serif;
    background-color: #f4f4f4;
}

.menu {
    width: 300px;
    margin: 20px;
}

.menu-item {
    padding: 12px;
    background-color: #2c3e50;
    color: white;
    cursor: pointer;
    border-bottom: 1px solid #444;
    transition: background 0.3s;
    position: relative;
}

.menu-item:hover {
    background-color: #34495e;
}

/* Dropdown hidden by default */
.dropdown {
    max-height: 0;
    overflow: hidden;
    background-color: #ecf0f1;
    transition: max-height 0.4s ease;
}

.dropdown div {
    padding: 10px;
    border-bottom: 1px solid #ccc;
    cursor: pointer;
    color: black;
}

.dropdown div:hover {
    background-color: #ddd;
}