Bootstrap 3: the collapse button disappears on smaller screens

I am working on creating a responsive navbar using Bootstrap's collapse feature for small screens. Take a look at the code for my navbar:

%nav{:class => "navbar navbar-default", :id => "nav_inicio", :role =>"navigation"}
  .container-fluid
    //Brand and toggle get grouped for better mobile display
    .col-lg-2.col-xs-1
    .col-lg-2.navbar-header
      %button{:class => "navbar-toggle", "data-toggle" => "collapse", "data-target" => "#navbar-collapse"}
        %span.sr-only
          Toggle navigation
        %span.icon-bar
        %span.icon-bar
        %span.icon-bar

    //Collect the nav links, forms, and other content for toggling
    .collapse.navbar-collapse.navbar-right#navbar-collapse
      %ul.nav.navbar-nav
        - if usuario_signed_in?
          %li.text-center
            = link_to :controller => "/ldi", :action => "new" do
              Recomendar lugar
          %li.text-center
            = link_to "#" do
              Mis lugares recomendados
          %li.text-center
            = link_to "#" do
              Mis lugares valorados
          %li.text-center
            = link_to "#" do
              Mis comentarios
          %li.divider.nav-divider
          %li.active.text-center
            = link_to :edit_usuario_registration do
              = current_usuario.nombre.upcase
          %li.text-center
            = link_to :destroy_usuario_session, :method => 'DELETE' do
              Salir
        - else
          %li.active.text-center
            = link_to :new_usuario_session do
              Entrar
          %li.text-center
            = link_to :new_usuario_registration do
              Registrar

Although it works well on my laptop when I resize the Chrome window, the collapse button is not visible on my mobile browser or on Chrome's emulation tool. Any ideas on how to resolve this issue?

What steps can be taken to ensure the collapse button displays correctly on all devices?

Answer №2

If you want to enhance your navigation, consider adding the following code:

<div class="navbar-header">
         <button class="navbar-toggle" type="button" data-toggle="collapse" data-target="#navbar-collapse">
         <span class="sr-only">Toggle navigation</span>
         <span class="icon-bar"></span>
         <span class="icon-bar"></span>
         <span class="icon-bar"></span>
    </button><!--//nav-toggle-->
 </div><!--//navbar-header-->      

Make sure to customize the content within the <button> </button> tags for better display on smaller screens.

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