       fill: 'both'
          }
        }
      }

    },

    /**
     * Can be used to determine that elements implement this behavior.
     */
    isNeonAnimation: true,

    /**
     * Do any animation configuration here.
     */
    // configure: function(config) {
    // },

    created: function() {
      if (!document.body.animate) {
        console.warn('No web animations detected. This element will not' +
            ' function without a web animations polyfill.');
      }
    },

    /**
     * R