Прыгает bootsrap dropdown

Question

Делаю навбар сайта и столкнулся с такой проблемой, мне нужно было сделать dropdown в dropdown но при появлении второго dropdown первый прыгает немного вверх, вообще никак не могу это исправить

.dropdown-menu {
  background-color: #4fa3fc;
  left: 40%;
  border: 0px;
  border-radius: 0px;
}

.dropdown-item {
  color: white;
}

.dropdown-menu.show {
  margin-top: -1px;
  left: unset;
  border-top: 2px solid white;
}

.dropdown-toggle::after {
  margin-left: 0;
}

.dropdown-menu.show:after {
  bottom: 100%;
  left: 15%;
  border: solid transparent;
  content: " ";
  height: 0;
  width: 0;
  position: absolute;
  pointer-events: none;
  border-color: rgba(0, 0, 0, 0);
  border-bottom-color: white;
  border-width: 20px;
  margin-left: -15px;
}

.dropdown.show {
  position: unset;
}


/*second dropwodwns*/

.second_dropdown_menu {
  background-color: red;
  left: 100% !important;
  top: 35%;
  border: 0px;
  border-radius: 0px;
}

.second_dropdown_item {
  color: white;
}

.second_dropdown_toggle::after {
  margin-left: 0;
}

.second_dropdown_menu.show:after {
  content: "";
  border: solid transparent;
  position: absolute;
  top: 8px;
  left: -3%;
  border-right-color: #eee;
  border-width: 10px;
  margin-top: -1px;
}

<script src="https://code.jquery.com/jquery-3.5.1.slim.min.js" integrity="sha384-DfXdz2htPH0lsSSs5nCTpuj/zy4C+OGpamoFVy38MVBnE+IbbVYUew+OrCXaRkfj" crossorigin="anonymous"></script>
<script src="https://cdn.jsdelivr.net/npm/[email protected]/dist/umd/popper.min.js" integrity="sha384-9/reFTGAW83EW2RDu2S0VKaIzap3H66lZH81PoYlFhbGU+6BZp6G7niu735Sk7lN" crossorigin="anonymous"></script>
<script src="https://cdn.jsdelivr.net/npm/[email protected]/dist/js/bootstrap.min.js" integrity="sha384-w1Q4orYjBQndcko6MimVbzY0tgp4pWB4lZ7lr30WKz0vr/aWKhXdBNmNb5D92v7s" crossorigin="anonymous"></script>
<link rel="stylesheet" href="https://cdn.jsdelivr.net/npm/[email protected]/dist/css/bootstrap.min.css" integrity="sha384-TX8t27EcRE3e/ihU7zmQxVncDAy5uIKz4rEkgIXeMed4M0jlfIDPvg6uqKI2xXr2" crossorigin="anonymous">
<li class="nav-item dropdown">
  <a class="nav-link dropdown-toggle" href="#" id="navbarDropdown" role="button" data-toggle="dropdown" aria-haspopup="true" aria-expanded="false">
         Новини
        </a>
  <div class="dropdown-menu " aria-labelledby="navbarDropdown">
    <a class="dropdown-item " href="http://localhost/wordpress/news/">Останні новини</a>
    <a class="dropdown-item dropdown-toggle second_dropdown_toggle" href="#" id="navbarDropdown" role="button" data-toggle="dropdown" aria-haspopup="true" aria-expanded="false">Новини за категоріями</a>
    <div class="dropdown-menu second_dropdown_menu  ">
      <a class="dropdown-item" href="#">Архів новин</a>
      <a class="dropdown-item" href="#">Архів новин</a>
      <a class="dropdown-item" href="#">Архів новин</a>
      <a class="dropdown-item" href="#">Архів новин</a>
    </div>
    <a class="dropdown-item" href="#">Архів новин</a>

  </div>
</li>

БЛОГ НА HUSL

Прыгает bootsrap dropdown

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