 // skip test due to missing variable support in keyframes
      // https://developer.microsoft.com/en-us/microsoft-edge/platform/issues/12084341/
      this.skip();
    }
    var xKeyframes1 = styled.$.keyframes1;
    var xKeyframes2 = styled.$.keyframes2;
    var completed = 0;

    [xKeyframes1, xKeyframes2].forEach(function(xKeyframes, index) {
      var target = index === 0 ? '10px' : '20px';
      var onAnimationEnd = function() {
        assert.include(xKeyframes.getComputedStyleValue('left'), target