Bootstrap 4 responsive navbar vertical

For Bootstrap 4, the breakpoints have changed. You should override the navbar CSS like this if you want it to be vertical on small screens:

@media(max-width: 544px) {
    .navbar .navbar-nav>.nav-item {
        float: none;
        margin-left: .1rem;
    }
    .navbar .navbar-nav {
        float:none !important;
    }
    .navbar .collapse.in, .navbar .collapsing  {
        clear:both;
    }
}

Demo http://codeply.com/go/Ar1H2G4JVH

Note: The @media query max-width should be adjusted accordingly for the navbar-toggleable-* class used in the navbar.

  • navbar-toggleable-xs – 544px
  • navbar-toggleable-sm – 767px
  • navbar-toggleable-md – 991px

UPDATE: The extra CSS is no longer needed as of Bootstrap 4 Alpha 6 since the navbar will stack vertically: http://www.codeply.com/go/cCZz5CsMcD

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