anchor.diff:  
           <div class="row">
             <div class="columns large-12">
  -            <%= f.submit "Sign up", class: "button radius large-12 small-12" %>
  +            <%= f.submit "Sign up", class: "button radius large-12 small-12 disabled", disabled: true %>
             </div>
           </div>
   
  
positive.code:         <div class="row">
            <div class="large-12 columns">
              <%= f.label :password %>
              <%= f.password_field :password  %>
              <% if resource.errors[:password].present? %>
                <small class="error"><%= resource.errors[:password].join(", ") %></small>
              <% end %>
  
negative.code:         <div class="row">
            <div class="large-12 columns">
              <%= f.label :password_confirmation %>
              <%= f.password_field :password_confirmation, disabled: true %>
              <% if resource.errors[:password_confirmation].present? %>
                <small class="error"><%= resource.errors[:password_confirmation].join(", ") %></small>
              <% end %>
  