You can use /deep/ and> together to specify the elements that need to be changed, as follows:
.el-menu /deep/ .is-active > .left-main-menu {
font-weight: 900;
}
You can use /deep/ and> together to specify the elements that need to be changed, as follows:
.el-menu /deep/ .is-active > .left-main-menu {
font-weight: 900;
}