polymer-messenger-app.css

.drawer-header {
  background-color: #F4C7C3;
}

core-scaffold::shadow core-toolbar {
  background-color: #C53929;
}

.content-header {
  background-color: transparent;
}

#main-content {
  padding: 5px 20px;
}

@media (max-width: 500px) {
  .content-header {
    font-size: 20px;
  }
}