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    <script defer src="/__/firebase/7.10.0/firebase-messaging.js"></script>
    <script defer src="/__/firebase/7.10.0/firebase-storage.js"></script>
    <!-- initialize the SDK after all desired features are loaded -->
    <script defer src="/__/firebase/init.js"></script>

    <style media="screen">
      body { background: #ECEFF1; color: rgba(0,0,0,0.87); font-family: Roboto, Helvetica, Arial, sans-serif; margin: 0; padding: 0; }
      #message { background: white; max