[roneesh]

Flexbox takes a few hours of work to learn, as others here have said. However, once you learn it, you have a logically sensible system of layout. It's worth the time. As far as it's quirks go, that's because it was slow to be standardized, so there is outdated info out there.

If you start to learn the older tools to do page layout, you can learn each one a bit faster (float, positioning, display properties), but combined they do NOT form a consistent logical system of page layout. Your learning is just repetition to see what works, Googling of CSS tricks and then hopefully you develop some intuition about when to use which property to achieve your desired effect. This confusion is why Flexbox is a net positive comparatively.

With flexbox you can know what elements will do when you apply a CSS property pretty assuredly (well, if not now, in the near future). Without, it's a bit more learn by error. Flexbox is a brighter future.