title: Rails CSS for text_field_tag default value
body: <p>Text field Tag:</p>
  
  <pre><code>&lt;%= text_field_tag :note, "#{f.notes}", :placeholder =&gt; 'Add a note about this rating set..' %&gt;
  </code></pre>
  
  <p>How can I style <code>f.notes</code> to have a background color so that the note looks highlighted after being submitted. </p>