https://charlotteclerk.com/js/parallax.js?v=nXlsJfhJmRCuVdrGd2lOfGH8KnEEJx8lE8zIe9pfiTs

1// Y axis scroll speed
2var velocity = 0.1;
3var adjustment = window.innerWidth > 500 ? 370 : 370;
4function update() {
5  var pos = $(window).scrollTop();
6  $(".services").each(function () {
7    var $element = $(this);
8    // subtract some from the height b/c of the padding
9    var height = $element.height() - adjustment;
10    $(this).css(
11      "backgroundPositionY",
12      Math.round((height - pos) * velocity) + "px"
13    );
14  });
15}
16$(window).bind("scroll", update);