/* 子菜单active */
.page-sidebar .el-menu-item.is-active .iconfont-cahnge {
color: #cc0000 !important;
}
/* 主菜单和子菜单同active */
.page-sidebar .el-submenu.is-active>.el-submenu__title {
color: #cc0000 !important;
}
.page-sidebar .el-submenu.is-active>.el-submenu__title .iconfont {
color: #cc0000 !important;
}
标签：submenu,el,菜单,color,menu,active,没高亮 From： https://www.cnblogs.com/dianzan/p/17867801.html