Feature: Develop the challenges and contributors section

[bridgitkanini]

Description

Develop the challenges and contributors section per the Figma designs.

Tasks

• Develop the challenges and contributors section as per the Figma designs
• Make sure the components are fully responsive
• Write Unit and e2e tests in the tests folder, to test the components' look, feel, and functionality
• Include a list of any API endpoints required in the pull request description, if applicable

Tools to use for tests:

• Vitest for Unit tests
• Playwright for e2e tests

[serenebabu2022]

Hi, Can I work on this