top: 50%;
            transform: translateY(-50%);
            background: none;
            border: none;
            color: #6c757d;
            cursor: pointer;
            padding: 0;
            width: 20px;
            height: 20px;
            display: none;
            z-index: 2;
        }
        
        .dropdown-clear:hover {
            color: var(--vietmap-accent);
        }
        
        .dropdown-menu {
            position: absolute;
            top: 100%;
            left: 0;
         