CSS Cursor code - apparently wrong syntax

I tried to insert the following line of code in an external CSS stylesheet, but my Error Cons开发者_运维百科ole told me there was an error parsing value for property 'cursor':

cursor: url(JC_puzzle_piece.cur) !important;

Is this not the proper syntax? If so, then what is?

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You need to provide a fallback preset value in case the cursor file isn't found. See a list of presets here.

cursor: url(JC_puzzle_piece.cur), default !important;