Chester (YooThemes)

Copy the “layouts/header.centered.php” file to your Child Theme.

Find (line 42):

<?php echo $this['widgets']->render('menu'); ?>

1	<?php echo $this['widgets']->render('menu'); ?>

Replace with:

<?php wp_nav_menu( array( 'theme_location' => 'main_menu' ) ); ?>

1	<?php wp_nav_menu( array( 'theme_location' => 'main_menu' ) ); ?>

Go to Mega Menu > Menu Themes and insert the following into the Custom Styling area:

@include mobile {
    .tm-navbar {
        display: block;
    }
}

@include mobile {

.tm-navbar {

display: block;

}

Max Mega Menu Documentation