[block-step-size-valid.html]
[e.style['block-step-size'\] = "1px" should set the property value]
expected: FAIL
[e.style['block-step-size'\] = "2em" should set the property value]
expected: FAIL
[e.style['block-step-size'\] = "0" should set the property value]
expected: FAIL
[e.style['block-step-size'\] = "none" should set the property value]
expected: FAIL
[e.style['block-step-size'\] = "calc(2em + 3ex)" should set the property value]
expected: FAIL
[e.style['block-step-size'\] = "1.2em" should set the property value]
expected: FAIL