.popup-container {
            display: none;
            position: fixed;
            top: 50%;
            left: 50%;
            transform: translate(-50%, -50%);
            padding: 20px;
            max-width: 80%;
            max-height: 80%;
            overflow: auto;
            background-color: #fff;
            box-shadow: 0 0 10px rgba(0, 0, 0, 0.1);
            z-index: 1000;
            animation: fadeIn 1s ease-in-out forwards;
        }

        .popup-content {
            text-align: center;
        }

        .popup-img {
            max-width: 100%;
            height: auto;
        }

        .btn-close {
            cursor: pointer;
            color: #333;
            font-weight: bold;
        }

        @keyframes fadeIn {
            0% {
                opacity: 0;
            }
            100% {
                opacity: 1;
            }
        }