Google Affiliate Disclosure Integration

I'm seeking a professional to integrate a Google Affiliate financial disclosure into my E-commerce site. It needs to be placed in the site header, specifically at the top center. The design should be simple, text-only without any graphical elements.

Ideal Skills:
- Proficiency in website development, particularly E-commerce platforms.
- Experience with Google Affiliate integrations.
- Strong understanding of web design principles, particularly in creating user-friendly interfaces.

Please ensure that the disclosure seamlessly integrates with the existing site design.