anchor.diff:  
   
   function initCodeMirror() {
  +
  +    var textbox = "<textarea id=\"cssstyle\" class=\"col s10 offset-s1 white prettyprint\" name=\"style\"></textarea>";
  +    $("#customstyleform").html(textbox);
  +
  +    //<%= @textarea %>
  +
       var editor = CodeMirror.fromTextArea(document.getElementById("cssstyle"), {
           lineNumbers: true,
           viewportMargin: Infinity
  
positive.code: 
  <%= form_tag atlys_custom_styles.save_custom_style_path, method: :post, class: "col s10 offset-s1" do %>
  
  <textarea id="cssstyle" class="col s10 offset-s1 white prettyprint" name="style">
  <% if @textarea.empty? %>
  .exampleclass {
  
negative.code: <%= @textarea %>
  <% end %>
  </textarea>
      </div>
  
      <%= submit_tag "Save", class: "btn col s2 offset-s5" %>
  
  