er-input-container>
      <label>Your name</label>
      <input is="iron-input">
    </paper-input-container>

Do not wrap `<paper-input-container>` around elements that already include it, such as `<paper-input>`.
Doing so may cause events to bounce infintely between the container and its contained element.

### Listening for input changes

By default, it listens for changes on the `bind-value` attribute on its children nodes and perform
tasks such as auto-validating and label styling when the `bind-value`