[Feature] Feature section style and content improvement

[AlfiyaSiddique]

Description

I want to implement a similar UI as shown below in the feature section of about page:

https://github.com/rohansx/informatician/assets/86224794/40797ae7-d88e-4c54-8289-c5ae3ea8980b

Currently, the feature cards just name the features But using the above UI style When the card turns in the backside we can add meaningful content related to the feature that our site provides.

Screenshots

Checklist

• [X] I have checked the existing issues
• [X] I have read the [Contributing Guidelines]
• [X] I have read the discussion tab thoroughly and got the project idea
• [X] I am willing to work on this issue (optional)
• [X] I am a GSSoC'23 contributor

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