How not to apply css to all elements?

Question

DLE

Hello everyone, in general, such a problem:
such a code for all pages (not complete)

<section class="content wrap cf">
        <section class="left">        
            {info}       
            {content}
    </section>
    </section>

.content and .wrap are responsive, and have a width of about 700px and make the page look like this along with .left:
. But I want to insert another block on top of it, only in fullstory! It takes up the full width! Like this :
The question is how to do it? I can't insert it into main.tpl, because I need all sorts of tags like: {date}, {image-1} and additional fields)
Can I somehow not apply the .wrap and content style to this block?
It's just that if you insert it into fullstory, even at the beginning, it only turns out like this: