app/views/devise/registrations/edit.html.erb
<%= form_for(resource, as: resource_name, url: registration_path(resource_name), html: { method: :put }) do |f| %>
<% if resource.errors.any? %>
<div class="card red lighten-3">
<div class="card-content">
<div class="card-title">Please fix the following errors:</div>
<ul class="browser-default">
<%= devise_error_messages! %>
</ul>
</div>
</div>
<% end %>
<div class="row">
<div id="your-info" class="col s12">
<%= render partial: 'devise/registrations/panes/information', locals: { f: f } %>
</div>
</div>
<div class="center">
<div class="actions">
<%= f.submit "Save changes", class: 'btn blue' %>
<%= link_to "Cancel", :back, class: 'btn grey' %>
</div>
</div>
<% end %>