element Tree 树形控件的点击和鼠标移上样式的背景色怎么去除？

element Tree 树形控件的点击和鼠标移上样式的背景色怎么去除？element Tree 树形控件的点击和鼠标移上样式的背景色怎么去除？

.el-tree-node__content:hover { //获焦
background-color: transparent; //设颜色透明
}
.el-tree-node:focus>.el-tree-node__content{ //选中
background-color: transparent;
}