Improve UI for Homepage and About page

[SahilDahekar]

HacktoberFest 22' Issue

• Improve UI for Homepage and About page.
• Improve font and spacing on all the pages.
• Creating Grid for eaze of view of preview during writing in input box.
• Improving navbar color and design for mobile layout.

##Improvements to be made

• Added new font.
• Adding new layout design.
• Adding new design text summary section

[SahilDahekar]

@Susmita-Dey want to work on this issue