.design-container {
            position: relative;
            display: inline-block;
            margin: 20px;
        }
        
        /* 设计元素基础样式 */
        .visual-design {
           
            
           
            flex-direction: column;
            gap: 15px;
            position: relative;
            overflow: hidden;
        }
        
        /* 右上角按钮样式 - 默认隐藏 */
        .edit-btn-top-right {
            position: absolute;
            top: 10px;
            right: 10px;
            height:30px;
            line-height:22px;
            padding: 4px 8px;
            background-color: #0d6efd;
            color: white;
            border: none;
            border-radius: 4px;
            cursor: pointer;
            font-size: 12px;
            z-index: 10;
            opacity: 0;
            transition: opacity 0.3s;
        }
        
        /* 鼠标悬停时显示右上角按钮 */
        .visual-design:hover .edit-btn-top-right {
            opacity: 1;
        }
        
        /* 居中按钮样式 - 默认隐藏 */
        .edit-btn-center {
            position: absolute;
            top: 50%;
            left: 50%;
            height:30px;
            min-width:64px;
            line-height:12px;
            transform: translate(-50%, -50%);
            padding: 8px 8px;
            background-color: #0d6efd;
            color: white;
            border: none;
            border-radius: 4px;
            cursor: pointer;
            font-size: 14px;
            z-index: 20;
            opacity: 0;
            transition: all 0.3s;
        }
        
        /* 居中按钮的遮盖层 - 默认隐藏 */
        .overlay {
            
            position: absolute;
            border-radius: 5px;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background-color: rgba(0, 0, 0, 0.5);
            z-index: 15;
            opacity: 0;
            transition: opacity 0.3s;
        }
        
        /* 鼠标悬停时显示居中按钮和遮盖层 */
        .visual-design:hover .edit-btn-center,
        .visual-design:hover .overlay {
            opacity: 1;
        }
        
        /* 按钮悬停效果 */
        .edit-btn-top-right:hover,
        .edit-btn-center:hover {
            background-color: #0b5ed7;
        }
        
        /* 模态框样式 */
        .modal-body pre {
            background: #f8f9fa;
            padding: 15px;
            border-radius: 5px;
        }