https://gamersdecide.com/modules/custom/gd_base/js/register.js?tm97le

1(function ($, Drupal, window) {
2    Drupal.behaviors.register = {
3      attach: function (context, settings) {
4        $(once('register-login', 'body.path-login', context)).each(function () {
5          var $button = $('summary[aria-controls="edit-user-profiles-0"][aria-expanded="true"][aria-pressed="true"]');
6          $button.hide();
7          var $label = $('label[for="edit-user-profiles-0-entity-field-gender-none"].option');
8          $label.hide();
9          $('.captcha__description.description').hide();
10          var $first_name = $('.js-form-item.form-item.js-form-type-textfield.form-type-textfield.js-form-item-user-profiles-0-entity-field-first-name-0-value.form-item-user-profiles-0-entity-field-first-name-0-value')
11          var $last_name = $('.field--type-string.field--name-field-last-name.field--widget-string-textfield.js-form-wrapper.form-wrapper')
12          $first_name.wrapAll('<div class="full-name"></div>');
13          $('.full-name').append($last_name);
14          $('.user-register-form > #user-register-form').addClass('user-form')
15  
16          var $userLoginForm = $('#user-login-form', context);
17          if ($userLoginForm.length) {
18             $userLoginForm.prepend('<h2>Login</h2>');
19          }
20          var inputField = $('#edit-user-profiles-0-entity-field-first-name-0-value', context);
21          if (inputField.length) {
22            inputField.attr('placeholder', 'First Name');
23          }
24          var inputLastName = $('#edit-user-profiles-0-entity-field-last-name-0-value', context);
25          if (inputLastName.length) {
26            inputLastName.attr('placeholder', 'Last Name');
27          }
28          var inputPassWord = $('#edit-pass-pass1', context);
29          if (inputPassWord.length) {
30            inputPassWord.attr('placeholder', 'Password');
31          }
32          var inputConfirmPassWord = $('#edit-pass-pass2', context);
33          if (inputConfirmPassWord.length) {
34            inputConfirmPassWord.attr('placeholder', 'Confirm Password');
35          }
36        });
37      }
38    }
39})(jQuery, Drupal, window);