.tree{display:-webkit-box;display:-ms-flexbox;display:flex;height:400px}.tree .left{width:400px;height:400px}.tree .left .tree_list{margin-top:10px;height:350px}.tree .left .tree_list,.tree .right{border:1px solid #ccc;overflow-y:scroll}.tree .right{width:200px;height:400px;margin-left:20px}.tree .right .list:hover{color:#409eff}.tree .right .list{display:-webkit-box;display:-ms-flexbox;display:flex;-webkit-box-pack:justify;-ms-flex-pack:justify;justify-content:space-between;-webkit-box-align:center;-ms-flex-align:center;align-items:center;padding:5px 10px}.tree .right .list .delete{cursor:pointer}