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a scroll effect position docker

Install the Polymer-CLI

First, make sure you have the Polymer CLI and npm (packaged with Node.js) installed. Run npm install to install your element's dependencies, then run polymer serve to serve your element locally.

Viewing Your Element

``
$ polymer serve
`

Running Tests

`
$ polymer test
`

Your application is already set up to be tested via web-component-tester. Run polymer test` to run your application's test suite locally.