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HTML

            
              <section class="bar">
  <p>Bacon ipsum dolor sit amet short ribs ribeye corned beef rump turducken fatback sausage shankle meatloaf ham hock beef, sirloin doner. Beef salami pastrami, venison shoulder chuck andouille meatball tri-tip short loin tail boudin filet mignon. Chuck tongue strip steak fatback. Filet mignon jerky shoulder chuck. Pig drumstick leberkas pancetta shankle venison short loin meatball ball tip. Beef rump biltong boudin tail meatloaf t-bone pancetta leberkas sausage filet mignon. Ribeye kielbasa brisket pork belly, pancetta tri-tip corned beef ham turducken tail frankfurter ham hock.</p>
  
  <ul>
    <li>List item 1</li>
    <li>List item 2</li>
    <li>List item 3</li>
    <li>List item 4</li>
  </ul>
  
</section>  
            
          
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CSS

            
              * {
  -webkit-box-sizing: border-box;
     -moz-box-sizing: border-box;
          box-sizing: border-box;
}

body {
  color: #fff;
  font: normal 16px/1.5em Arial, sans-serif;
}

.bar {
  max-width: 800px;
  background: #333;
  text-align: justify;
  padding: 10px calc(50% - 400px);
    
  -webkit-box-sizing: content-box;
     -moz-box-sizing: content-box;
          box-sizing: content-box;
}
            
          
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