Design plays a significant role in the effectiveness of an opt-in form. Here are some tips: - Visual Hierarchy: Use [contrasting colors](href) for the CTA button to make it stand out. - Responsive Design: Ensure the form is mobile-friendly. - Whitespace: Use ample whitespace to avoid clutter and maintain focus on the form fields. - Visual Cues: Include arrows or images pointing toward the form to guide the user’s eye.