Changed UI of Website

[SujalSamai]

🛠️ Fixes Issue

Fixes Issue #456

👨‍💻 Changes proposed

• Changed the style of navbar and hero section
• Changed the font of website
• Aligned the cards properly using flexbox
• Refactored the CSS files and reduced them to just two
• Changed the hover style effects of the website
• Fixed the navbar links of About Page

✔️ Check List (Check all the applicable boxes)

• [x] My code follows the code style of this project.
• [x] This PR does not contain plagiarized content.
• [x] The title of my pull request is a short description of the requested changes.

📄 Note to reviewers

This code just changes the UI of the website, there is still a lot of work needed to make it responsive. Also the images need to be added for other chrome extensions.

📷 Screenshots

[narayan954]

Thanks for your contribution :)

[narayan954]

Please fix navigation bar with scroll