Fixes #80 improvement of share button ui

[TanushreeBorase]

Description

Please include a concise summary of the change and any relevant details.

• Main features or updates:
• I have added icon for share option . On clicking it the circle shape expands. I have also added border to it.
• Related issue: improve ui of share button #80

PR Checklist

• My submission follows the guidelines in CONTRIBUTING.md.
• All new and existing tests pass.
• I have tested npm run lint locally.
• The description of changes is clear and concise.
• I have documented any necessary changes to the codebase.

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