title: check if any element contains certain css style
body: <p>I am wondering to find out the checking process for an element to contain any css style.</p>
  
  <p>I do have below html code:</p>
  
  <pre><code>&lt;ul id="sample"&gt;
      &lt;li style="left:-100px"&gt;text 1&lt;/li&gt;
      &lt;li style="left:0px"&gt;text 2&lt;/li&gt;
      &lt;li style="left:100px"&gt;text 3&lt;/li&gt;
  &lt;/ul&gt;
  </code></pre>
  
  <p>I want to find out the "li" whose style left is 0px and then want to apply any more style to that li.</p>
  
  <p>Thanks</p>