Bootstrap 4: Navbar with logo and 2 rows

Question

I am trying to create a website header that conforms to the schematic below using Bootstrap 4:

The code I am using to achieve this is as follows (extraneous

Answer 1

The Bootstrap 4 grid row>col-* aren't designed to be used inside the Navbar. Here is the supported content. Now that Bootstrap 4 uses flexbox, it's much easier to align Navbar content without using the grid row>col-*.

If you want a Navbar with logo and 2 rows, see this answer:
Bootstrap 4 navbar with 2 rows

<nav class="navbar navbar-expand navbar-dark fixed-top bg-dark">
    <div class="container">
        <h1 class="mb-0"><a href="#">Logo</a></h1>
        <div class="d-flex flex-column flex-wrap" id="navbarCollapse">
            <span class="navbar-text ml-auto py-0 px-lg-2">(00) 1234 5678</span>
            <ul class="navbar-nav mb-auto mt-0 ml-auto">
                <li class="nav-item active">
                    <a class="nav-link py-0" href="#">Home</a>
                </li>
                <li class="nav-item">
                    <a class="nav-link py-0" href="#">Product</a>
                </li>
                <li class="nav-item">
                    <a class="nav-link py-0" href="#">Company</a>
                </li>
                <li class="nav-item">
                    <a class="nav-link py-0" href="#">Blog</a>
                </li>
            </ul>
        </div>
    </div>
</nav>

Examples:

Basic Navbar with 2 rows: https://www.codeply.com/go/ilJBKjJsEy

Responsive Navbar with 2 rows: https://www.codeply.com/go/DsfePuoZy0

The 2nd example collapses into a mobile stacked menu on small screens that can be toggled using the hamburger icon. Use the flexbox and spacing utility classes to position elements as desired. There are many ways to achieve what you want: https://www.codeply.com/go/pGE8fTf9dM

Answer 2

You can use 2 navbar-nav elements and then stack them up by using the flex-column class like so:

<link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/4.0.0-beta.3/css/bootstrap.min.css" integrity="sha384-Zug+QiDoJOrZ5t4lssLdxGhVrurbmBWopoEl+M6BdEfwnCJZtKxi1KgxUyJq13dy" crossorigin="anonymous">

<script src="https://code.jquery.com/jquery-3.2.1.slim.min.js" integrity="sha384-KJ3o2DKtIkvYIK3UENzmM7KCkRr/rE9/Qpg6aAZGJwFDMVNA/GpGFF93hXpG5KkN" crossorigin="anonymous"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/popper.js/1.12.9/umd/popper.min.js" integrity="sha384-ApNbgh9B+Y1QKtv3Rn7W3mgPxhU9K/ScQsAP7hUibX39j7fakFPskvXusvfa0b4Q" crossorigin="anonymous"></script>
<script src="https://maxcdn.bootstrapcdn.com/bootstrap/4.0.0-beta.3/js/bootstrap.min.js" integrity="sha384-a5N7Y/aK3qNeh15eJKGWxsqtnX/wWdSZSKp+81YjTmS15nvnvxKHuzaWwXHDli+4" crossorigin="anonymous"></script>

<nav class="navbar navbar-expand-lg navbar-light bg-light">
    <div class="container">
        <a class="navbar-brand" href="#">
            <img src="https://picsum.photos/140/70" width="140" height="70" alt="Logo">
       </a>

        <button class="navbar-toggler" type="button" data-toggle="collapse" data-target="#navbarCollapse" aria-controls="navbarCollapse" aria-expanded="false" aria-label="Toggle navigation">
           <span class="navbar-toggler-icon"></span>
       </button>

        <div class="collapse navbar-collapse flex-column align-items-end" id="navbarCollapse">
            <!-- navbar1 -->
            <div class="navbar-nav mb-lg-0">
                <a class="nav-item nav-link" href="#">(00) 1234567</a>
            </div>

            <!-- navbar2 -->
            <ul class="navbar-nav mt-0">
                <li class="nav-item active">
                    <a class="nav-link" href="#">Home <span class="sr-only">(current)</span></a>
                </li>
                <li class="nav-item">
                    <a class="nav-link" href="#">About</a>
                </li>
                <li class="nav-item">
                    <a class="nav-link" href="#">Features</a>
                </li>
                <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">Products</a>
                    <div class="dropdown-menu" aria-labelledby="navbarDropdown">
                        <a class="dropdown-item" href="#">Action</a>
                        <a class="dropdown-item" href="#">Another action</a>
                        <div class="dropdown-divider"></div>
                        <a class="dropdown-item" href="#">Something else here</a>
                    </div>
                </li>
                <li class="nav-item">
                    <a class="nav-link" href="#">Free Cookies</a>
                </li>
                <li class="nav-item">
                    <a class="nav-link" href="#">Contact</a>
                </li>
            </ul>
        </div>
    </div>
</nav>