D3 Examples - Simple layout example

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<html>
    <head>
       <title>Испытание: строим сетку</title>
       <meta charset="utf-8">
    </head>
    <body>
       <div class="head-area">
        <div class="layout-positioner">
          <div class="header">Header</div>
          <div class="menu">Menu</div>
          <div class="promo">Promo 1</div>
          <div class="promo">Promo 2</div>
        </div>
      </div>
      
      <div class="layout-positioner">
        <div class="content">
          <div class="content-left">Left</div>
          <div class="content-main">Main</div>
          <div class="content-right">Right</div>
        </div>
      </div>
      
      <div class="footer">Footer</div>
        
        
    </body>
</html>
    