Build a responsive product detail page with an image gallery on the left and purchase information on the right.
The layout has an image slider or gallery showing product photos on the left, and details (name, price, description, add-to-cart) on the right.
Use a two-column responsive layout that stacks on mobile. Make the image gallery interactive (e.g., thumbnail selection).
Ensure the purchase section is clearly readable.
Test the layout at different screen sizes.
