app/views/user/edit_password.html.erb
<section class="page-section change-password">
<header>
<h1>Change your password</h1>
</header>
<%= semantic_form_for user, url: password_user_path, method: :put do |f| %>
<%= f.inputs do %>
<%= f.input :current_password %>
<%= f.input :password, label: "New password" %>
<%= f.input :password_confirmation, label: "Confirm your new password" %>
<%= f.actions do %>
<%= f.action :submit, label: 'Change password' %>
<% end %>
<% end %>
<% end %>
</section>