UI Improvement: Add Animations and Better Styling for Non-Profit List

[phyleria]

We want to improve the UI of TryOpenGiving's non-profit listing page by adding animations and refining the styling while adhering to our design system using MUI (Material-UI). The goal is to make the UI more engaging and visually appealing.

Acceptance Criteria:

• Add hover animations to each non-profit card in the list (e.g., slight elevation and shadow effect on hover).
• Improve the layout by adjusting spacing, font sizes, and card alignment.
• Ensure that the UI remains responsive on different screen sizes.
• Stick to the MUI component library and theme settings to maintain consistency.
• Consider adding transition effects when the list is filtered or sorted.

[Yash-sudo-web]

@phyleria, i can pick up this issue