body, html {
            height: 100%;
            margin: 0;
            overflow: hidden;
            position: relative;
        }

        iframe {
            width: 100%;
            height: 100%;
            border: none;
        }

        .popup-buttons {
            position: absolute;
            top: 10px;
            right: 10px;
            display: flex;
            flex-direction: column;
            align-items: flex-end;
        }

        .popup-button {
            margin-bottom: 10px;
            background-color: #3498db;
            color: #fff;
            padding: 8px 12px;
            border: none;
            cursor: pointer;
            border-radius: 5px;
        }

        .popup {
            display: none;
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background: rgba(0, 0, 0, 0.8);
            justify-content: center;
            align-items: center;
            text-align: center;
        }

        .popup img {
            max-width: 80%;
            max-height: 60%;
        }

        .wechat-buttons {
            margin-top: 20px;
            display: flex;
            justify-content: center;
            align-items: center;
            flex-direction: column;
        }

        .wechat-button {
            margin: 10px;
            background-color: #4CAF50;
            color: #fff;
            padding: 8px 12px;
            border: none;
            cursor: pointer;
            border-radius: 5px;
        }

        .close-button {
            position: absolute;
            top: 10px;
            right: 10px;
            background-color: #e74c3c;
            color: #fff;
            padding: 8px 12px;
            border: none;
            cursor: pointer;
            border-radius: 5px;
        }