[Gssoc'21] Added the Preloader to website

[arpit456jain]

INCLUDE ALL NECESSARY FIELDS AND DELETE FIELDS THAT ARE NOT NECESSARY.

Description

I had added a preloader to the website Fixes #87

Type of Change:

Delete irrelevant options.

• Code
• Quality Assurance
• User Interface

Code/Quality Assurance Only

• New feature (non-breaking change which adds functionality pre-approved by mentors)

How Has This Been Tested?

https://user-images.githubusercontent.com/55352601/114906359-93809700-9e37-11eb-8a65-44824778a4a9.mp4

[arpit456jain]

@ishubham21 @sakshi300699 @anika-001 kindly review my PR

[arpit456jain]

@sakshi300699 kindly review my PR

[arpit456jain]

@rupeshmohanty kindly review my PR