ings" label="Settings"></core-item>
      <core-item icon="favorite" label="Favorite"></core-item>
      <core-item icon="account-box" label="Account"></core-item>
      
    </core-menu>
  
  </section>

  <h2>submenu:</h2>
  
  <section>
  
    <core-menu selected="0">
    
      <core-submenu icon="settings" label="Topics">
      
        <core-item label="Topic 1"></core-item>
        <core-item label="Topic 2"></core-item>
        
      </core-submenu>
      
      <core-submenu icon="settings" label=