Modify particular page using Smarty

Question

I'd like to remove some elements such as <footer> tag, menu row etc. on pages where body has unique classes like: 'shop_news_list' and 'shop_news'. The site is based on Smarty. I've tried to put those elements I want to delete in between something like this:

{if !($body_class == 'shop_news_list' || $body_class == 'shop_news')} 
  <footer> 
    <div class="innerfooter container row">
            ...
    </div>
  </footer>
{/if}

However it doesn't work or makes an element disappear from every page. Is there any other way I can do this or maybe you know how can I properly check if body has specific class. (I can not create new templates to use them on different pages).