app/views/devise/passwords/new.html.erb
<h2>Forgot your password?</h2>
<%= form_for(resource, as: resource_name, url: password_path(resource_name), html: { method: :post }) do |f| %>
<md-input-container>
<%= f.label :login, 'Email/Username' %>
<%= f.text_field :login, autofocus: true %>
</md-input-container> <br>
<md-button type='submit' class='md-raised md-primary'>Reset Password</md-button>
<% end %>