app/views/devise/passwords/edit.html.erb
<%= bootstrap_devise_error_messages! %>
<div class="panel panel-default devise-bs">
<div class="panel-heading">
<h4><%= t('.change_your_password', :default => 'Change your password') %></h4>
</div>
<div class="panel-body">
<%= form_for(resource, :as => resource_name, :url => password_path(resource_name), :html => { :method => :put, role: "form" }) do |f| %>
<%= f.hidden_field :reset_password_token %>
<div class="form-group">
<%= f.label :password, t('.new_password', :default => 'New password') %>
<%= f.password_field :password, autofocus: true, class: "form-control" %>
</div>
<div class="form-group">
<%= f.label :password_confirmation, t('.confirm_new_password', :default => 'Confirm new password') %>
<%= f.password_field :password_confirmation, class: "form-control" %>
</div>
<%= f.submit t('.change_my_password', :default => 'Change my password'), class: "btn btn-primary" %>
<% end %>
</div>
</div>
<%= render "devise/shared/links" %>