You have encountered an issue with mismatching Bootstrap versions and classes.
It seems like you are using the bootstrap4 alpha version while trying to utilize the .navbar-expand
class, which is actually part of bootstra4 beta.
Stack Snippet Using Bootstrap4.beta
<link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/4.0.0/css/bootstrap.min.css" integrity="sha384-Gn5384xqQ1aoWXA+058RXPxPg6fy4IWvTNh0E263XmFcJlSAwiGgFAW/dAiS6JXm" crossorigin="anonymous">
<nav class="navbar navbar-expand bg-light">
<!-- Links -->
<ul class="navbar-nav">
<li class="nav-item">
<a class="nav-link" href="#">Link 1</a>
</li>
<li class="nav-item">
<a class="nav-link" href="#">Link 2</a>
</li>
<li class="nav-item">
<a class="nav-link" href="#">Link 3</a>
</li>
</ul>
</nav>
If you wish to stick with the bootstrap alpha version, you should use .navbar-toggleable
instead of .navbar-expand
, along with additional CSS adjustments since .navbar-toggleable
is effective until min-width: 576px
.
Stack Snippet Using Bootstrap4.alpha
.navbar-toggleable .navbar-nav {
flex-direction: row;
flex-wrap: nowrap;
align-items: center;
}
.navbar-toggleable .navbar-nav .nav-link {
padding-right: .5rem;
padding-left: .5rem;
}
<link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/4.0.0-alpha.6/css/bootstrap.min.css" integrity="sha384-rwoIResjU2yc3z8GV/NPeZWAv56rSmLldC3R/AZzGRnGxQQKnKkoFVhFQhNUwEyJ" crossorigin="anonymous">
<nav class="navbar navbar-toggleable navbar-light bg-faded">
<!-- Links -->
<ul class="navbar-nav">
<li class="nav-item">
<a class="nav-link" href="#">Link 1</a>
</li>
<li class="nav-item">
<a class="nav-link" href="#">Link 2</a>
</li>
<li class="nav-item">
<a class="nav-link" href="#">Link 3</a>
</li>
</ul>
</nav>