[corners-valid.html]
  [e.style['corners'\] = "round 30%" should set the property value]
    expected: FAIL

  [e.style['corners'\] = "10px bevel" should set the property value]
    expected: FAIL

  [e.style['corners'\] = "round 10% / 2rem squircle" should set the property value]
    expected: FAIL

  [e.style['corners'\] = "notch 10px / squircle 30% 10px / 1rem bevel / 2px round" should set the property value]
    expected: FAIL

  [e.style['corners'\] = "normal" should set the property value]
    expected: FAIL

  [e.style['corners'\] = "4px 2% round" should set the property value]
    expected: FAIL

  [e.style['corners'\] = "4px 2% round / bevel 1em / normal" should set the property value]
    expected: FAIL

  [e.style['corners'\] = "normal / 1px round / normal / 3% squircle" should set the property value]
    expected: FAIL

  [e.style['corners'\] = "normal / superellipse(-0.5) 30% 10px / 10px 1rem notch" should set the property value]
    expected: FAIL