JSFiddle - React, Tailwind, and code Playground

HTML

<link rel="stylesheet" href="https://stackpath.bootstrapcdn.com/bootswatch/4.4.1/flatly/bootstrap.min.css">
<nav class="navbar navbar-expand-sm navbar-light bg-light">
  <a class="navbar-brand" href="#">Lead Manager</a>
  <button class="navbar-toggler" type="button" data-toggle="collapse" data-target="#navbarSupportedContent" aria-controls="navbarSupportedContent" aria-expanded="false" aria-label="Toggle navigation">
    <span class="navbar-toggler-icon"></span>
  </button>
  

  <div class="collapse navbar-collapse" id="navbarSupportedContent">
    <div class="navbar-nav mr-auto"></div>
    <ul class="navbar-nav my-2 my-lg-0">
      <li class="nav-item">
        <Link to="/register" class="nav-link">Register</Link>
      </li>
      <li class="nav-item">
        <Link to="/login" class="nav-link">Login</Link>
      </li>
    </ul>
  </div>
</nav>