app/views/simple_captcha/_simple_captcha.erb
<div class='simple_captcha'>
<div class='simple_captcha_image'>
<%= simple_captcha_options[:image] %>
</div>
<div class='simple_captcha_field'>
<%= simple_captcha_options[:field] %>
</div>
<div class='simple_captcha_label'>
<%= simple_captcha_options[:label] %>
</div>
</div>