jQuery Script for Smooth Scrolling Tutorial From https://snipt.net/wpstudio/jquery-script-for-smooth-scrolling-tutorial-dcaa26c8/
jQuery(document).ready(function($){
$('#menu-singlepagemenu > li > a').on('click', function(){
$('html, body').animate({
scrollTop: $(this.hash).offset().top
}, 1000);
});
})