Reference to check which properties are available for styling a tag?

[ricmic2009]

I am working on styling my \[code\]<blockquote>\[/code\] but I am not able to find a complete reference that would let me check what is available to me (newbie here).For example, "box-shadow" property. How to check if I can define for \[code\]<blockquote>\[/code\] or not? Trial and error?