我正在尝试使用twitter-bootstrap 4将导航栏中的某些元素右移

I am trying to shift login and cart to right.I tried mr-auto, ml-auto justify-content-between and justify-content-end but out of vain it just doesn't shift right. Please help me out.

#header-nav
{
    background-color: #C5B358;
    border-radius: 0;
    border: 0;
}
<nav id=header-nav class="navbar navbar-expand-md navbar-default justify-content-end">
      <a href="index.html" class="navbar-brand">
        <h1 class="tagline">Subha</h1>
      </a>
      <div class="collapse navbar-collapse">
        <ul class="navbar-nav">
        <li class="nav-item">
          <a href="#" class="nav-link">Cart</a></li>
        <li class="nav-item">
          <a href="#" class="nav-link">Login</a></li>
      </ul>
      </div>
    </nav> 

Navigation bar of my project.