How to make your product images smaller in Shopify 2.0 Dawn theme

Firstly you can identify the problem:

The product image is too large

In this example you want to look for product__media in section-main-product.css

Then you simply want to change the .product:not(.product — no-media) .product__media-wrapper {
max-width: 64%;
width: calc(64% — 1rem / 2);
}

Change the percentage to whatever you want and you’re done