Yes - shipping with Modernizer and targetting `.no-flex` browsers to provide fallbacks of course. 80% of the time we use it for vertical centering so the fallb

Yes - shipping with Modernizer and targetting `.no-flex` browsers to provide fallbacks of course. 80% of the time we use it for vertical centering so the fallback can be `display: table` with the children being `display:table-cell` and it rarely gets more complex than that. If you need something very complex to do what you want - I have a strong hunch the markup is the problem and not the CSS. Or you're trying to avoid using Javascript and are instead relying on a bunch of half-supported and new CSS features to hack your way around things. Which means you probably aren't coding for production anyway. :)