https://corporatecounselnow.com/themes/custom/themag/themes/charm/js/smooth-scroll.js?tkzp8z

1(function ($) {
2  $(function () {
3
4    // Select all links with hashes
5    $('a[data-smooth-scroll]')
6    // Remove links that don't actually link to anything
7      .not('[href="#"]')
8      .not('[href="#0"]')
9      .click(function(event) {
10        // On-page links
11        if (
12          location.pathname.replace(/^\//, '') === this.pathname.replace(/^\//, '')
13          &&
14          location.hostname === this.hostname
15        ) {
16          // Figure out element to scroll to
17          var target = $(this.hash);
18          target = target.length ? target : $('[name=' + this.hash.slice(1) + ']');
19          // Does a scroll target exist?
20          if (target.length) {
21            // Only prevent default if animation is actually gonna happen
22            event.preventDefault();
23            $('html, body').animate({
24              scrollTop: target.offset().top
25            }, 1000, function() {
26              // Callback after animation
27              // Must change focus!
28              var $target = $(target);
29              $target.focus();
30              if ($target.is(":focus")) { // Checking if the target was focused
31                return false;
32              } else {
33                $target.attr('tabindex','-1'); // Adding tabindex for elements not focusable
34                $target.focus(); // Set focus again
35              };
36            });
37          }
38        }
39      });
40
41  })
42})(jQuery);