/* 将按钮固定在右下角并美化 */
        #floatingButton {
            position: fixed;
            bottom: 20px;
            right: 20px;
            background-color: #4CAF50;
            color: white;
            border: none;
            border-radius: 5px;
            padding: 10px 20px;
            cursor: pointer;
            font-size: 16px;
            box-shadow: 0 4px 8px 0 rgba(0,0,0,0.2), 0 6px 20px 0 rgba(0,0,0,0.19);
        }

        #floatingButton:hover {
            background-color: #45a049;
        }