feat: Update Event Section Content for Better Engagement

[akshay0611]

Summary: This PR updates the content of the event section to improve clarity, relevance, and engagement. The changes aim to better communicate the platform's strengths and value proposition.

Changes Made:

• Rewrote <p class="card-subtitle">, <h3 class="card-title">, and <p class="card-text"> for each event card to highlight specific causes and activities.
• Updated button text to encourage exploration and participation.
• Improved the bottom button text for consistency and clarity.
• Ensured alignment with existing CSS styles and framework conventions.

Testing:

• Verified responsiveness across different screen sizes.
• Ensured proper rendering of the event section and its content.

Related Issue: Closes #16