Add custom scrollbar styles

[ramith-kulal]

Fixes Issue🛠️

Closes #69

Description👨‍💻

This pull request introduces a custom blue-colored scrollbar for all types of websites.

Type of change📄

• [] Bug fix (non-breaking change which fixes an issue)
• [X] New feature (non-breaking change which adds functionality)

How this has been tested✅

This pull request introduces a custom blue-colored scrollbar for all types of websites. The default browser scrollbar can sometimes be visually inconsistent with the website's design, so I've implemented a custom scrollbar style to provide a more cohesive user experience.

Checklist✅

• [x] My code follows the style guidelines of this project
• [x] I have performed a self-review of my own code
• [x] I have commented my code, particularly in hard-to-understand areas
• [x] I have added demonstration in the form of GIF/video file
• [x] I am an Open Source Contributor

Screenshots/GIF📷

Working under JWOC

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Name	Status	Preview	Comments	Updated (UTC)
mytwit	✅ Ready (Inspect)	Visit Preview	💬 Add feedback	Feb 25, 2024 9:02am

[ramith-kulal]

@varshith257 @JiyaGupta-cs have a look

[varshith257]

Can provide updated scrollbar scr?

[ramith-kulal]

Can provide updated scrollbar scr?

Yes

[ramith-kulal]

Can provide updated scrollbar scr?

Yes

to replicate github scrollbar we need to remove the border radius which look kinda odd so i added border radius hope thats fine

[ramith-kulal]

LGTM

🙌

[ramith-kulal]

if at all the width further needs to be increased let me know , hope this pr gets merged.