2-lit-element/assignments/8-polymer-components.html

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  <script type="module">
    /**
     * Assignment 8:
     * Replace your toggle buttons with <paper-button> from Polymer 3.
     *
     * - Both Polymer and LitElement are web components, so you can use them side by side
     * - Polymer is built with modules, so they are easy to import
     *
     * Check out the README.md for reference documentation
     *
     * Copy paste into plnkr: http://plnkr.co/edit/DI9312Rn54NuIH7FRzzD?p=preview
     */
    import { LitElement, html, css } from 'https://unpkg.com/lit-element@2.0.0-rc.5?module';

    // example import through the unpkg CDN:
    // import 'https://unpkg.com/@polymer/paper-button/paper-button.js?module';

    class MyElement extends LitElement {

    }

    customElements.define('my-element', MyElement);
  </script>
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