CSS3: How relatively safe are different CSS3 features?
I am starting a new web project, and obviously I'd like to use CSS3 for ease. However, I'm worried about IE8 -- or even lingering old versions of other browsers -- rendering things horribly. I'm especially concerned about CSS3 features that greatly affect formatting, such as flexible box.

Is there any site that has amalgamated all this information into one location? I'd love to see a blurb for each CSS3 that says how it degrades in non-CSS3 browsers, and how acceptable this degradation is (even better would be a sample image so the developer could judge for themselves). Does such a resource exist?
CSS3: How relatively safe are different CSS3 features?
===

I am starting a new web project, and obviously I'd like to use CSS3 for ease. However, I'm worried about IE8 -- or even lingering old versions of other browsers -- rendering things horribly. I'm especially concerned about CSS3 features that greatly affect formatting, such as flexible box.

Is there any site that has amalgamated all this information into one location? I'd love to see a blurb for each CSS3 that says how it degrades in non-CSS3 browsers, and how acceptable this degradation is (even better would be a sample image so the developer could judge for themselves). Does such a resource exist?