feat: Changed image size and border

[Anushkam09]

Title and Issue number

Title : Improve landing page UI by enlarging image and changing border

Issue No. : #1627

Code Stack : css

Close #1627

Description

I have changed the css so that the image is improved

Video/Screenshots (mandatory)

before:

after:

Type of PR

• [ ] Bug fix
• [x] Feature enhancement
• [ ] Documentation update
• [ ] Other (specify): ___

Checklist:

• [x] I have performed a self-review of my code.
• [x] I have commented my code, particularly in hard-to-understand areas.
• [x] I have tested the changes thoroughly before submitting this pull request.
• [x] I have provided relevant issue numbers, screenshots, and videos after making the changes.
• [x] I have gone through the contributing.md file before contributing
• [x] I have Starred the Repository.

Additional context:

Are you contributing under any Open-source programme?

• [x] I am contributing under GSSOC'24 Extended
• [ ] I am contributing under Hacktoberfest'24

[github-actions[bot]]

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