webcomponents-reactway-7.js

...
  render() {
    return html`
      <style>
        host: {
          display: block;
        }
        section {
          background: #fff;
          margin: 130px 0 40px 0;
          position: relative;
          box-shadow: 0 2px 4px 0 rgba(0, 0, 0, 0.2), 0 25px 50px 0 rgba(0, 0, 0, 0.1);
        }
      </style>
      <section>
        <todo-input></todo-input>
        <todo-list></todo-list>
        <todo-toolbar></todo-toolbar>
      </section>
    `;
  }
}
...