
PASS Property cy value '-10px' computes to '-10px' 
PASS Property cy value '0.5em' computes to '20px' 
PASS Property cy value 'calc(10px + 0.5em)' computes to '30px' 
PASS Property cy value 'calc(10px - 0.5em)' computes to '-10px' 
PASS Property cy value '40%' computes to '40%' 
PASS Property cy value 'calc(50% + 60px)' computes to 'calc(50% + 60px)'