title: querySelectorAll is not a function
body: <p>I'm trying to find all oferts in the var articleFirst, but the return message in the console says that "querySelectorAll" is not a function. Why I do get that error? </p>
  
  <p>This is my HTML:</p>
  
  <pre><code>&lt;article class="first"&gt;     
    &lt;div class="feature parts"&gt; 
      &lt;div class="oferts"&gt; 
        &lt;div class="heart icons"&gt;&lt;/div&gt; 
          &lt;h1&gt;Build with passion&lt;/h1&gt;  
      &lt;/div&gt;
    &lt;/div&gt;
  &lt;/article&gt;
  </code></pre>
  
  <p>This is my JavaScript: </p>
  
  <pre><code>var articleFirst = document.querySelectorAll("article.first");
  var oferts = articleFirst.querySelectorAll(".oferts");
  </code></pre>
  
  <p>Error:</p>
  
  <blockquote>
    <p>Uncaught TypeError: articleFirst.querySelectorAll is not a function</p>
  </blockquote>