Adding scroll animations in Parallax Pro. http://sridharkatakam.com/adding-scroll-animations-parallax-pro/

front-page.php

wp_enqueue_style( 'animate', get_stylesheet_directory_uri() . '/css/animate.min.css' );

// load Waypoints
// Source: http://imakewebthings.com/jquery-waypoints/
wp_enqueue_script( 'waypoints', get_stylesheet_directory_uri() . '/js/waypoints.min.js', array( 'jquery' ), '1.0.0' );

wp_enqueue_script( 'waypoints-init', get_stylesheet_directory_uri() .'/js/waypoints-init.js' , array( 'jquery', 'waypoints' ), '1.0.0' );

style.css

/* Scroll animations
--------------------------------------------- */

@media only screen and (min-width: 1025px) {

	.home-section-2, .home-section-3 .widget, .home-section-4, .home-section-5 .widget,
	.home-even a.button, .home-odd a.button,
	.parallax-home .simple-social-icons ul li {
		opacity: 0;
	}

}

waypoints-init.js

jQuery(function($) {

	$('.home-section-1').waypoint(function() {
		$(this).toggleClass( 'animated fadeInDown' );
	},
	{
		offset: '100%',
	});

	$('.home-section-2, .home-section-4').waypoint(function(direction) {
		if (direction == 'up') {
			$(this).removeClass( 'fadeIn' ).addClass( 'fadeOut' );
		}
		else {
			$(this).removeClass('fadeOut').addClass( 'animated fadeIn' );
		}
	},
	{
		offset: '50%',
	});

	$('.home-section-3 .widget').waypoint(function(direction) {
		if (direction == 'up') {
			$(this).removeClass( 'fadeIn' ).addClass( 'fadeOut' );
		}
		else {
			$(this).removeClass('fadeOut').addClass( 'animated fadeIn' );
		}
	},
	{
		offset: '50%',
	});

	$('.home-section-5 .widget').waypoint(function(direction) {
		if (direction == 'up') {
			$(this).removeClass( 'fadeInUp' ).addClass( 'fadeOut' );
		}
		else {
			$(this).removeClass('fadeOut').addClass( 'animated fadeInUp' );
		}
	},
	{
		offset: '80%',
	});


	$('.home-odd a.button, .home-even a.button').waypoint(function() {
		$(this).toggleClass( 'animated bounceIn' );
		$(this).css('opacity','1');
	},
	{
		offset: '50%',
		triggerOnce: true
	});

	$('.parallax-home .simple-social-icons ul li').waypoint(function() {
		$(this).toggleClass( 'animated fadeIn' );
	},
	{
		offset: '90%',
	});

});