Shopify Iframe Integration

I need an iframe integration for the "Add to Cart" button on a Shopify product page. The iframe should handle product configurations and integrate with Shopify.

Requirements:
- Iframe on Shopify product page
- Add to cart button within iframe
- Configuration options to be added to Shopify cart
- Integration with Shopify

Ideal Skills:
- Experience with Shopify and iframe integration
- Familiarity with Shopify's cart and product configuration systems
- Strong web development skills