title: how to apply css to a link within a particular div only?
body: <p>Here is my situation. I have 3 divs on my website. There is a button in each of divs. Here is my codes :</p>
  
  <pre><code>&lt;div id="gg1"&gt;
    &lt;a class="btn"&gt;
  &lt;/div&gt;
  &lt;div id="gg2"&gt;
    &lt;a class="btn"&gt;
  &lt;/div&gt;
  &lt;div id="gg3"&gt;
    &lt;a class="btn"&gt;
  &lt;/div&gt;
  </code></pre>
  
  <p>May I know how to apply css style to 1 button only without effect on other 2 buttons Css or Jquery? Note that I cannot change the class and id of the buttons.</p>