.btn-open-popup { 
            padding: 12px 24px; 
            font-size: 18px; 
            background-color: green; 
            color: #fff; 
            border: none; 
            cursor: pointer; 
            transition: background-color 0.3s ease; 
        } 
  
        .btn-open-popup:hover { 
            background-color: #4caf50; 
        } 
  
        .overlay-container { 
            display: none; 
            position: fixed; 
            top: 0; 
            left: 0; 
            width: 100%; 
            height: 100%; 
            background: rgba(0, 0, 0, 0.6); 
            justify-content: center; 
            align-items: center; 
            opacity: 0; 
            transition: opacity 0.3s ease; 
            z-index:9999;
        } 
  
        .popup-box { 
            background: #000; 
            padding: 24px; 
            border-radius: 12px; 
            box-shadow: 0 0 20px rgba(0, 0, 0, 0.4); 
            width: 50%; 
            text-align: center; 
            opacity: 0; 
            transform: scale(0.8); 
            animation: fadeInUp 0.5s ease-out forwards; 
            z-index:9999;
        } 
  
        .form-container { 
            display: flex; 
            flex-direction: column; 
        } 
  
        .form-label { 
            margin-bottom: 10px; 
            font-size: 16px; 
            color: #444; 
            text-align: left; 
        } 
  
        .form-input { 
            padding: 10px; 
            margin-bottom: 20px; 
            border: 1px solid #ccc; 
            border-radius: 8px; 
            font-size: 16px; 
            width: 100%; 
            box-sizing: border-box; 
        } 
  
        .btn-submit, 
        .btn-close-popup { 
            padding: 15px 30px; 
            border: none; 
            cursor: pointer; 
            transition: background-color 0.3s ease, color 0.3s ease; 
        } 
  
        .btn-submit { 
            background-color: green; 
            color: #fff; 
        } 
  
        .btn-close-popup { 
            margin-top: 12px; 
            background-color: #212121; 
            color: #fff; 
        } 
  
        .btn-submit:hover, 
        .btn-close-popup:hover { 
            background-color: #212121; 
        } 
  
        /* Keyframes for fadeInUp animation */ 
        @keyframes fadeInUp { 
            from { 
                opacity: 0; 
                transform: translateY(20px); 
            } 
  
            to { 
                opacity: 1; 
                transform: translateY(0); 
            } 
        } 
  
        /* Animation for popup */ 
        .overlay-container.show { 
            display: flex; 
            opacity: 1; 
        }