title: Way of Thinking CSS classes
body: <p>I'm thinking about css refacto in my job, and i'm wondering if it's a good idea (considering best practices) to create css class with only one property.</p>
  
  <p>A simple example, is it usefull to create many classes this way</p>
  
  <pre><code>.center-text {
      text-align: center;
  }
  </code></pre>
  
  <p>What's the best between doing this or using small libs like Knacss (if you know it) for example.</p>