app/views/devise/passwords/edit.html.erb
<div class="panel-heading">
<h2>Change your password</h2>
</div>
<div class="panel-body">
<%= form_for(resource, as: resource_name, url: password_path(resource_name), html: { method: :put }) do |f| %>
<%= devise_error_messages! %>
<%= f.hidden_field :reset_password_token %>
<div class="field">
<%= f.password_field :password, autofocus: true, autocomplete: "off", class: 'form-control', placeholder: 'New password' %>
</div>
<div class="field">
<%= f.password_field :password_confirmation, autocomplete: "off", class: 'form-control', placeholder: 'Confirm new password' %>
</div>
<div class="actions">
<%= f.submit "Change my password", class: 'btn btn-primary btn-block' %>
</div>
<% end %>
<%= render "devise/shared/links" %>
</div>