.myBox{width:100%;height:100%;border:1px solid red;display:flex}.moveBtn{height:100%;width:1px;position:absolute;right:0;top:0;cursor:col-resize;background-color:#ff0}.content-sider-layout .ant-layout-header,.content-sider-layout .ant-layout-footer{background-color:#9acd32}.content-sider-tree{margin:8px}