so you’ll need to apply some custom css to make it work. Look for an option in your theme options and if you can’t find one, you can proceed with a Customm css plugin or creating a child theme.
In the custom css, you’ll want to style according to this example
// Styling for the parent menu item
.main-navigation ul li.current-menu-parent {
background-color:green; //just an ugly example
}
// Styling for the current page
.main-navigation ul ul li.current-menu-item {
background-color:red; //just an ugly example
}
And if you want both the parent and the current menu item to have the same styling, you can combine both declarations together like this
.main-navigation ul li.current-menu-parent, .main-navigation ul ul li.current-menu-item {
background-color:yellow; //just an ugly example
}
I hope this helps