jquery-smooth-scroll

https://github.com/kswedberg/jquery-smooth-scroll

GitHub - kswedberg/jquery-smooth-scroll: Automatically make same-page links scroll smoothly

<script src="https://cdn.statically.io/gh/kswedberg/jquery-smooth-scroll/3948290d/jquery.smooth-scroll.min.js"></script>

// smooth scroll
	$('a').click(function(event) {
		event.preventDefault();
		var link = this;
		$.smoothScroll({
			scrollTarget: link.hash
		});
	});