[BUG] wrong alignment of join our public meeting

[dishafaujdar]

Describe the bug.

1. We need to fix the alignment of "Join our public meeting" on the home page.
2. Change the calendar card to the height, the same as that of the slack card for the desktop view.

Alignment :

Calendar Card :

🥦 Browser

Brave

👀 Have you checked for similar open issues?

• I checked and didn't find similar issue

🏢 Have you read the Contributing Guidelines?

• I have read the Contributing Guidelines

Are you willing to work on this issue ?

Yes I am willing to submit a PR!

[github-actions]

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