CodePen

HTML

            
              <div class=goodmeasure>
  <p>abcdefghijklmnopqrstuvwxyz abcdefghijklmnopqrstuvwxyz abcdefghijklmnopqrstuvwxyz abcdefghijklmnopqrstuvwxyz abcdefghijklmnopqrstuvwxyz abcdefghijklmnopqrstuvwxyz abcdefghijklmnopqrstuvwxyz</p>
</div>
            
          
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CSS

            
              .goodmeasure{
  width:26em;
  font-size:2em;
  margin:auto;
}
            
          
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JavaScript

            
              
            
          
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999px
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