https://foldingspace.co.uk/scripts/umbraco-starterkit-app.js

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10            }
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28    return a
29}({
30        1: [
31            function(e, o, r) {
32                !function() {
33                    "use strict";
34                    $(document).ready(function() {
35                        $(window).bind("scroll",
36                            function() {
37                                var e = 150;
38                                $(window).scrollTop() > e
39                                    ? $(".header").addClass("header--fixed")
40                                    : $(".header").removeClass("header--fixed")
41                            }), $(".mobile-nav-handler").click(function(e) {
42                            $(".mobile-nav").toggleClass("mobile-nav--open"), $(".header").toggleClass("header--hide"),
43                                $("body").toggleClass("no-scroll"), $("#toggle-nav").toggleClass("active")
44                        }), $(".nav-link").click(function(e) {
45                            $(".mobile-nav").removeClass("mobile-nav--open"), $(".header").removeClass("header--hide"),
46                                $("body").removeClass("no-scroll"), $("#toggle-nav").removeClass("active")
47                        })
48                    })
49                }()
50            }, {}
51        ]
52    },
53    {},
54    [1]);