title: What are the orphans and widows in css?
body: <p>I have never seen before like the following (seen in bootstrap template):</p>
  
  <pre><code>  p,
    h2,
    h3 {
      orphans: 3;
      widows: 3;
    }
  </code></pre>
  
  <p>So, what are the orphans and widows for?</p>