"Create a professional Meta ad image for a web developer offering custom website design services for dentists in the USA. The image should feature a clean, modern dental office setting as a background with abstract dental elements, like a tooth icon or dental tools, softly integrated. In the foreground, showcase realistic and clear mockups of a dentist's website displayed on a desktop computer and a smartphone, emphasizing responsive design. Avoid faces on the screens--focus on clean layouts with dental icons, text, and clear buttons. Use a color palette of white, light blue, and soft green to evoke cleanliness and trust. Include a simple but bold call-to-action button that says 'Get Your Custom Dental Website!' in a prominent place. The overall design should feel fresh, professional, and inviting."