UI Modifications

[nitin-1926]

Is your feature request related to a problem? Please describe.
No, there's no specific problem but I would like to work on the UI for the website and make some modifications.

Describe the solution you'd like
I would like to do some design changes so that website looks more attractive

Describe alternatives you've considered
Some changes which I have thought of :-

1. Changing the font
2. Adding transitions for smooth theme change
3. Improve color combinations
4. Reduce the white gap between footer and body

[GauravWalia19]

Send me a PR will be good to have these changes.
I think font is already good except Treasure JS header font.

[nitin-1926]

Ya will fix changes accordingly and create a PR. Can make modifications as per need after that.