title: How to call another class on hover in CSS?
body: <p>The class of DIV is FIRST. I want to call class SECOND on hover. How can I do this?</p>
  
  <p>I am using following code:</p>
  
  <p><div class="snippet" data-lang="js" data-hide="false" data-console="true" data-babel="false">
  <div class="snippet-code">
  <pre class="snippet-code-css lang-css prettyprint-override"><code>.first{
  background:#F00;
  }
  .second{
  background: #0F0;
  }</code></pre>
  <pre class="snippet-code-html lang-html prettyprint-override"><code>&lt;div class="first"&gt; This is DIV&lt;/div&gt;</code></pre>
  </div>
  </div>
  </p>