Meshery: Docs: Make landing page buttons responsive

[leecalcote]

Current State:
The three buttons on the landing page of Meshery Docs are not responsive. See screenshot.

Desired State:
These buttons should rearrange (stack vertically and not have the words in their labels linewrapped, but scale with the size of the screen)

Screenshot

[leecalcote]

@schillingjerrid the sweet marriage of your talents are requested here kind sir.

[anirudhjain75]

Hey @leecalcote @schillingjerrid Let me know if this is still available for picks :)

[leecalcote]

@anirudhjain75 yes, please do grab it. 👍

@schillingjerrid does an amazing job. I don’t know that he’s available to pick this one up, though.

[leecalcote]

Fixed by #649

[schillingjerrid]

Thanks guys! Sorry I wasn't able to get to this one.