CodePen

HTML

            
              <div id="container">
  
  <div id="contentWrapper">
    <table>
    <tr>
      <td>Some content</td>
    </tr>
    </table>
  </div>
  
</div>
            
          
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CSS

            
              #contentWrapper{
	border-bottom:solid 1px black;
}

#container #contentWrapper:last-child{
  border-bottom:none;
}
            
          
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JavaScript

            
              
            
          
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999px
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