bootstrap 4 navbar
<!-- Bootstrap 4.6 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 dropdown">
<a
class="nav-link dropdown-toggle"
href="#"
id="navbarDropdown"
role="button"
data-toggle="dropdown"
aria-haspopup="true"
aria-expanded="false"
>
Dropdown
</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 disabled"
href="#"
tabindex="-1"
aria-disabled="true"
>Disabled</a
>
</li>
</ul>
<form class="form-inline my-2 my-lg-0">
<input
class="form-control mr-sm-2"
type="search"
placeholder="Search"
aria-label="Search"
/>
<button class="btn btn-outline-success my-2 my-sm-0" type="submit">
Search
</button>
</form>
</div>
</nav>