Add masonry layout grid

Created by: Tirokk

Authored by alina-beck Aug 13, 2019 Merged Aug 21, 2019

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🍰 Pullrequest

Use CSS grid to create a masonry layout – allowing posts to have different heights.

So instead of this:

We should now see this:

Issues

• fixes #378 (closed)
• relates #372 (closed)
• waiting for PR: https://github.com/Human-Connection/Nitro-Styleguide/pull/131

ToDo

• update styleguide dependency
• use styleguide components in project