Product Description from default right to left (under product photo) Help.

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Hey! I was wondering if anyone could help.  I am using the Brooklyn theme and trying to get my product descriptions from the right, to the left below the product picture.  It is this question here:

My understanding is I have to copy this line of code: 

 <div class="product-single__description rte" itemprop="description">
            {{ product.description }}

But I am unsure where exactly to paste it? Could someone help? Let me know! Thanks!