<div>
  <div class="left">

     <div class="Block_1">

       <div class="content"></div>
       <div class="content"></div>
       <div class="content"></div>

     </div>

     <div class="Block_2"></div>..
     <div class="Block_3"></div>..
     <div class="Block_4"></div>..

  </div>
  <div class"right">

    <div class="Block_5">

      <div class="content"></div>
      <div class="content"></div>
      <div class="content"></div>
      <div class="content"></div>

    </div>

    <div class="Block_6">

      <div class="content"></div>
      <div class="content"></div>

    </div>

    <div class="Block_7"></div>..
    <div class="Block_8"></div>..

  </div>

</div>