Add Styling, Shadow, and Hover Effects to contact icons

The contact icons in the current design could benefit from improved styling to make them more visually engaging and interactive. I propose adding:

Styling: Define consistent sizes, colors, and spacing for all icons.
Shadow Effect: Add a subtle shadow to give icons a slight 3D effect, enhancing their appearance.
Hover Effect: Introduce interactive hover effects, such as color changes, scaling, or shadow intensity changes.