[box-shadow-offset-computed.html]
[Property box-shadow-offset value '0 0']
expected: FAIL
[Property box-shadow-offset value '10px 0']
expected: FAIL
[Property box-shadow-offset value '0 10px']
expected: FAIL
[Property box-shadow-offset value '10px 10px']
expected: FAIL
[Property box-shadow-offset value '10px 20px, 30px 40px']
expected: FAIL
[Property box-shadow-offset value 'calc(1em + 1px) calc(-1em + 1px)']
expected: FAIL