implemented the new case study section of the home page

[ShravaniAK]

Fixes #6031

implemented the new design of the case study section , did the following changes

1. changed the background color of each case study to white.
2. changed the font family and removed the italic style.
3. added margin and padding .
4. Changed the color of the horizontal line and the font.
5. added box shadow effect on Hover .

Before :

After:

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[Cali0707]

/cc @zainabhusain227 @mmejia02

[Cali0707]

Hey @zainabhusain227 @mmejia02 when you have some time can you compare the preview to the designs and leave any feedback here?

[ShravaniAK]

@Cali0707 , I have implemented all the changes requested, except for the "incorporate the arrows" , I think that it's a new feature implementation that can be made in a new separate pr.

[ShravaniAK]

Also for point 2 , I have fixed that in #6036

[Cali0707]

@ShravaniAK it looks like this has some conflicts now that your other PR merged, would you mind fixing those?

[ShravaniAK]

@Cali0707 I have fixed the conflicts!

[Cali0707]

Thanks @ShravaniAK ! There are a few issues that need fixing (see video below):

1. When hovering over a case study, some of the text is shifted by the border
2. The transition between no border and border should be animated

https://github.com/user-attachments/assets/0aecdff0-4733-478d-84b4-7dda9cff1e41

[ShravaniAK]

@Cali0707 I have fixed both the issues, can you please review them once again, Thanks!

[knative-prow[bot]]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: Cali0707, ShravaniAK

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