The flexible box layout module — or “flexbox,” to use its popular nickname — is an interesting part of the W3C Working Draft. The flexbox specification is still a draft and subject to change, so keep your eyes on the W3C, but it is part of a new arsenal of properties that will revolutionize how we lay out pages. At least it will be when cross-browser support catches up.
In the meantime, we can experiment with flexbox and even use it on production websites where fallbacks will still render the page correctly. It may be a little while until we consider it as mainstream as, say,
border-radius, but our job is to investigate new technologies and use them where possible. That said, when it comes to something as fundamental as page layout, we need to tread carefully.