Don't use vertical split design for smaller resolution

Summary:
If the screen width is smaller than 1024px, the site uses a more
conservative horizontal flow.

This ask to adjust the easter egg and the elements order.

Test Plan: Check the site in < 1024 and > 1024 resolutions.

Reviewers: dereckson

Reviewed By: dereckson

Subscribers: fauve

Differential Revision: https://devcentral.nasqueron.org/D1033