fix: update community page 'why get involved' section styling

[nloureiro]

This PR implements the design changes requested in issue #15718 for the community page "why get involved" section.

Changes

• Remove background color from the section
• Remove fixed height from the section
• Make h2 4xl on desktop and remove mb-8 margin from parent h2 container

Implementation

• Removed bg-[#ccfcff] and dark:bg-[#293233] background colors
• Removed h-full and lg:h-[720px] fixed heights
• Added lg:text-4xl to H2 component for desktop 4xl sizing
• Removed mb-8 margin from h2 parent container

Fixes #15718

Generated with Claude Code

[nloureiro]

@coderabbitai can you review

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🧩 Analysis chain

@nloureiro I'll help you review this PR! Let me first gather information about the changes to provide you with a comprehensive review.

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🏁 Script executed:

#!/bin/bash
# Get PR information including title, description, and changed files
gh pr view 15724 --repo ethereum/ethereum-org-website --json title,body,files,additions,deletions,changedFiles

# Get the detailed diff for the PR
gh pr diff 15724 --repo ethereum/ethereum-org-website

Length of output: 2127

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@nloureiro I've reviewed PR #15724 and here's my analysis:

✅ Overall Assessment: Looks Good!

This is a clean, focused PR that implements specific design changes for the community page's "why get involved" section. The changes are minimal and well-targeted.

Changes Analysis:

✅ Positive Changes:

1. Flexible Height: Removing h-full and lg:h-[720px] makes the section more responsive and content-driven
2. Clean Implementation: The changes exactly match the requirements in issue small design changes to the community page #15718
3. Typography Enhancement: Adding lg:text-4xl to the H2 improves desktop readability
4. Tighter Layout: Removing mb-8 creates better visual cohesion

⚠️ Considerations to Verify:

1. Visual Hierarchy: Removing background colors (bg-[#ccfcff] and dark:bg-[#293233]) changes the section's visual prominence - ensure this doesn't affect the page's overall design balance
2. Layout Testing: With fixed heights removed, verify the section still maintains proper proportions across different screen sizes and content lengths
3. Accessibility: Test that the contrast remains sufficient without the background colors, especially in dark mode

Code Quality:

• Clean diff: Only necessary changes made
• Consistent with Tailwind patterns: Proper use of responsive classes
• Maintainable: Clear, targeted modifications

Recommendation:

The implementation looks solid! I'd suggest testing the visual changes across different devices and content scenarios to ensure the layout remains cohesive without the fixed constraints.

Great work on keeping the changes focused and well-documented! 🚀

🐰💭 Thoughtful rabbit examining the clean, purposeful changes