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 … Read more