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                企業??AI智能體構建引擎,智能編排和調試,一鍵部署,支持知識庫和私有化部署方案 廣告
                外邊框 特點:不能加載內容,但是可以加載背景 ``` margin ``` margin:auto //居中顯示盒子 margin: 0 auto;// 就是上下距離為0, auto就是左右自適應到兩邊距離一樣/ margin-top 上 margin-bottom 下 margin-left 左 margin-right 右 四值法: ``` margin:4px;          上下左右分別具有4像素 margin:2px 4px;        上下為二像素,左右為4像素 margin:10px 20px 30px     上:10px 左、右:20px 下:30px     margin:1px 2px 3px 4px     上:1px 右:2px 下:3px 左:4px ``` 代碼如下 ``` div{ width:100px; height:100px; background-color:?crimson; margin-top:100px; margin-bottom:20px; margin-left:30px; margin-right:100px; ????} ``` 效果:![](https://img.kancloud.cn/5c/89/5c89681f9d7eeedb4d05b0ef6878ec9d_897x572.png)
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