CODE EXAMPLE FOR CSS

Slick slider and ACF Pro in WordPress

function child_enqueue_styles() {
	// Slick slider files enqueue
	wp_enqueue_script( 'slickjs', get_stylesheet_directory_uri() . '/assets/js/slick.min.js', array( 'jquery' ), '1.8.1', true );
	wp_enqueue_script( 'slickjs-init', get_stylesheet_directory_uri(). '/assets/js/slick-init.js', array( 'slickjs' ), '1.8.1', true );
	wp_enqueue_style( 'slickcss', get_stylesheet_directory_uri() . '/assets/css/slick.css', '1.8.1', 'all');
	wp_enqueue_style( 'slickcsstheme', get_stylesheet_directory_uri(). '/assets/css/slick-theme.css', '1.8.1', 'all');
}
add_action( 'wp_enqueue_scripts', 'child_enqueue_styles', 15 );