.menu {
    position: relative;
    display: inline-block;
}

.dropdown {
    display: none;
    position: absolute;
    background-color: #fff;
    min-width: 200px;
    box-shadow: 0 8px 16px rgba(0,0,0,0.2);
    z-index: 1000;
    left: 0;
    top: 100%;
}

    .dropdown.show {
        display: block;
    }

.dropdown-item {
    position: relative;
    padding: 10px 20px;
    white-space: nowrap;
    background-color: white;
    cursor: pointer;
}

    .dropdown-item:hover {
        background-color: #f0f0f0;
    }

.has-submenu-icon {
    position: absolute;
    right: 10px;
    top: 50%;
    transform: translateY(-50%);
    font-size: 14px;
    color: #888;
}

.submenu {
    display: none;
    position: absolute;
    left: 100%;
    top: 0;
    min-width: 200px;
    background-color: #fff;
    box-shadow: 0 8px 16px rgba(0,0,0,0.2);
    z-index: 1000;
}

.dropdown-item:hover > .submenu {
    display: block;
}

.dropdown-item .submenu .dropdown-item > .submenu {
    display: none;
    position: absolute;
    left: 100%;
    top: 0;
    min-width: 200px;
    background-color: #fff;
    box-shadow: 0 8px 16px rgba(0,0,0,0.2);
    z-index: 1000;
}

.dropdown-item .submenu .dropdown-item:hover > .submenu {
    display: block;
}