title: haml adding styles to form elements
body: <p>Couldn't seem to find the answer to this question - what is the haml syntax for adding styles or a class styling to elements within a rails form_for?</p>
  
  <p>The code I am dealing with is </p>
  
  <pre><code>.row.form
  .threecol
  .sevencol
      = form_for @article do |a|
        %h3= a.label "title"
        =    a.text_field :title 
        %h3= a.label "description"
        =    a.text_area :description
        %h3= a.label "body"
        =    a.text_area :body
        %br/
        =  a.submit "Post Article"
   .twocol.last
  </code></pre>
  
  <p>I am wanting to add a style to the text area description element.
  I have tried (where new_desc is the class styling)</p>
  
  <pre><code>= a.text_area.new_desc :description
  </code></pre>
  
  <p>and </p>
  
  <pre><code>= a.text_area { :style ... } :description
  </code></pre>
  
  <p>but both failed to compile.
  Can anyone help with this (hopefully trivial) problem? </p>