grammar - How do you parse the sentence "What is it about cheetahs that make them so fast"

I have been working through a grammar book, and I have learned a lot. However, I have trouble when it comes to question type sentences.

My best guess is that

"What is it about cheetahs" is a noun phrase?

"that makes them so fast" is another phrase?

I feel like the main verb is "makes", but I'm not sure about "is"

Also I'm not sure about the role of "that" does it just join the two phrases? It almost seems that there are 2 dependent phrases but that doesn't sound like it would make sense.

I'm just looking for help breaking this sentence down into its parts.