PASS getComputedStyle(testElement).backgroundColor is 'rgb(255, 0, 0)' PASS testElement.offsetWidth is 0 PASS getComputedStyle(testElement).backgroundColor is 'rgb(255, 0, 0)' PASS testElement.offsetWidth is 0 PASS getComputedStyle(testElement).backgroundColor is 'rgb(0, 128, 0)' PASS testElement.offsetWidth is 100 This test requires testRunner and window.internals.