app/views/devise/passwords/edit.html.erb
<h2>Change your password</h2>
<%= 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.label :password, "New password" %><br />
<% if @minimum_password_length %>
<em>(<%= @minimum_password_length %> characters minimum)</em><br />
<% end %>
<%= f.password_field :password, autofocus: true, autocomplete: "off", class: 'form-control' %>
</div>
<div class="field">
<%= f.label :password_confirmation, "Confirm new password" %><br />
<%= f.password_field :password_confirmation, autocomplete: "off", class: 'form-control' %>
</div>
<br/>
<div class="actions">
<%= f.submit "Change my password", class:"btn btn-primary" %>
</div>
<% end %>
<hr/>
<%= render "devise/shared/links" %>