Grey area bigger than clickable on hires displays in explore cards

[pulsejet]

Tested on Macbook Pro Retina; probably might be fixed by adding a max-width to card.

[Krishna-Baldwa]

For replicating the issue NavBar -> Explore -> (inspect element) Click on any card

[arnavbhate]

Can you assign me this issue?

[arnavbhate]

I made pull request #132 for this issue.