Revamp all the div cards with good styling and padding, Add support for dark mode & light mode

[VrajVed]

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Prerequisite issue: #29

[Anu-code02]

I am GSSoc25 contributor . please assign it to me.

[VrajVed]

I am GSSoc25 contributor . please assign it to me.

This issue was just changed to a level 2 issue, are you still interested in working on this issue ?

[Anu-code02]

yes

[Anu-code02]

Thank you

[VrajVed]

Thank you

No problem, enjoy coding ! (just revamp the styling and try not to change too much text in the card)