style(prices): Add blue background to prices container

[keyserfaty]

Summary

Added a blue background color to the prices container element to improve visual styling and section distinction. This change enhances the visual hierarchy of the prices module by providing a colored backdrop for pricing information.

Changes

• Added background: blue property to .prices-container class in src/modules/prices/scenes/styles.css

Testing

1. Navigate to the prices page/section in the application
2. Verify that the prices container now displays with a blue background
3. Check that the background color does not negatively impact text readability or other UI elements within the container
4. Test across different screen sizes to ensure the background renders correctly on mobile and desktop views