Add margin-top to the back-to-top button for improved visual appearance.

[ImranNawar]

Dear team, I'm submitting this pull request to enhance the visual appearance of the "back-to-top" button by adding a margin-top. The button currently appears too close to the content, and this change will create a better visual separation, making it more user-friendly and aesthetically appealing. I have tested the changes across different screen sizes and devices to ensure responsiveness and compatibility.

Before

Now

Please review and merge this pull request at your earliest convenience. Thank you for your time and consideration.

Best regards, Imran Nawar

Checklist

• [x] ✅ My code follows the code style of this project.

• [x] Breaking change (fix or feature that would cause existing functionality to change)

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[agamjotsingh18]

Please get assigned to the issue first, also this issue is too easy to be assigned

[ImranNawar]

Hi @agamjotsingh18, I hope you're doing well. I've made a small but significant improvement to the "back-to-top" button that I believe should be merged. Since it's a minor enhancement, I didn't create a separate issue but created this pull request directly.

[ImranNawar]

Hello @agamjotsingh18 ,

Thank you for merging my pull request. Could you kindly consider assigning the relevant labels to ensure its inclusion in GSSoC'23 metrics?

Best regards, Imran Nawar