 <div id="new-answer">
  <%= form_for [@question, @answer] do |f| %>
    <%= f.label :answer %>:
    <%= f.text_field :content %>

    <%= f.submit %>
  <% end %>
</div>

 <div id="new-answer">
  <%= form_for [@question, @answer] do |f| %>
    <%= f.label :answer %>:
    <%= f.text_area :content, :size => "50X10" %>

    <%= f.submit %>
  <% end %>
</div>

Change answer input from text_filed to larger text_area
Change answer input from text_filed to larger text_area
