Bootstrap class: .navbar

<nav class="navbar navbar-expand-lg navbar-light bg-light">
  <a class="navbar-brand" href="#">Navbar</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">
    <ul class="navbar-nav mr-auto">
      <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="#">Link</a>
      </li>
      <li class="nav-item">
        <a class="nav-link disabled" href="#">Disabled</a>
      </li>
    </ul>
    <form class="form-inline my-2 my-lg-0">
      <input class="form-control mr-sm-2" type="text" placeholder="Search" aria-label="Search">
      <button class="btn btn-outline-success my-2 my-sm-0" type="submit">Search</button>
    </form>
  </div>
</nav>

Preview

Sass source

/* _navbar.scss:18 */
.navbar {
  position: relative;
  display: flex;
  flex-wrap: wrap; // allow us to do the line break for collapsing content
  align-items: center;
  justify-content: space-between; // space out brand from logo
  padding: $navbar-padding-y $navbar-padding-x;

  // Because flex properties aren't inherited, we need to redeclare these first
  // few properties so that content nested within behave properly.
  > .container,
  > .container-fluid {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    justify-content: space-between;
  }
}

/* _print.scss:100 */
.navbar {
  display: none;
}

Uses variables

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/* _navbar.scss:18 */
$navbar-padding-y
$navbar-padding-x

/* _print.scss:100 */

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