Shopify product pagina Dawn

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Hi all, 

In my theme, Dawn, is an error on the product page. I tried to fix it in the backhand but there is no function where I can't fix it. 

Normally the product description will be on the right side of the page, next to the product images. It seems like there should be two blocks. One left for the images of the product and one on the right for the description. See the second picture how it should be.

Does anyone know how to fix it? Im working on it for two days and I can't seem to find the code or the backhand option where I can edit it. 

Thank you guys!