.m-course-sort .custom-tree-node{display:-webkit-box;display:-ms-flexbox;display:flex}.m-course-sort .el-tree-cell{text-align:center}.m-course-sort .el-tree-title{-webkit-box-flex:1;-ms-flex:1;flex:1;text-align:left}.m-course-sort .el-tree-con{width:220px}.m-course-sort .el-tree-btn{width:220px;text-align:left}.tree-content .tree-header{display:-webkit-box;display:-ms-flexbox;display:flex;height:50px;background:#f5f7fa;font-size:14px}.tree-content .tree-header div{text-align:center}.tree-content .tree-header .tree-header-cell{line-height:50px}.tree-content .tree-header .tree-header-title{-webkit-box-flex:1;-ms-flex:1;flex:1;padding-left:24px;text-align:left}.tree-content .tree-header .tree-header-btn,.tree-content .tree-header .tree-header-con{width:220px}