How can I create a two-row navbar in Bootstrap 4?

Bootstrap 4 navbar with 2 rows

In Bootstrap 4, it's possible to create a navbar with two rows by using the flexbox utility classes. Here's how you can achieve this:

1. Add the flex-column class to the .navbar-collapse div. This will stack the two navbars vertically.

2. Set the flex-direction: column property on the .navbar-brand element. This will align the logo vertically with the navbar links.

3. Optionally, you can add the flex-row class to the second navbar to align the icons horizontally.

Here's an updated version of your code:

<nav class="navbar navbar-toggleable-md navbar-inverse bg-inverse">
    <div class="container">
        <button class="navbar-toggler navbar-toggler-right align-self-center mt-3" type="button" data-toggle="collapse" data-target="#navbarCollapse">
            <span class="navbar-toggler-icon"></span>
        </button>
        
        <h1 class="py-2 ml-lg-2 mx-3"></h1>
</div></nav>

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