slider above menu

I am using the Trestle Genesis Child Theme and I used this code to insert a new widget for the slider but it’s appearing above the menu instead of below it. Can anyone help?

//Add in new Widget areas
function themeprefix_extra_widgets() {
	genesis_register_sidebar( array(
	'id'            => 'slider',
	'name'          => __( 'Slider', 'genesischild' ),
	'description'   => __( 'This is the Slider area', 'genesischild' ),
	'before_widget' => '<div class="wrap slider">',
	'after_widget'  => '</div>',
	) );
}
add_action( 'widgets_init', 'themeprefix_extra_widgets' );

//Position the slider Area
function themeprefix_slider_widget() {
	if( is_front_page() ) {
	genesis_widget_area ( 'slider', array(
	'before' => '<aside class="slider-container">',
	'after'  => '</aside>',));
	}
}

add_action( 'genesis_after_header','themeprefix_slider_widget' );

https://wordpress.org/plugins/cyclone-slider-2/