title: How to remove specific style tag in html using C#
body: <p>Here is my html code:</p>
  
  <pre><code>&lt;p&gt;&lt;span style="background:lime;Color:Red;"&gt;Contrary to popular belief, &lt;b&gt;&lt;u&gt;Lorem Ipsum is not simply&lt;/u&gt;&lt;/b&gt; random text. It has roots in a piece of classical Latin literature from &lt;span style="background:blue;"&gt;45 BC, making it over 2000 years&lt;/span&gt; old. Richard McClintock, &lt;/span&gt;&lt;b&gt;
  </code></pre>
  
  <p>From above code, i need to remove the background attributes &amp; value using C# from all the spans. The other values in style tag should remain. Eg:</p>
  
  <pre><code>&lt;span style="background:lime;Color:Red;"&gt;Contrary to popular belief,.....&lt;/span&gt;
  </code></pre>
  
  <p>should look</p>
  
  <pre><code>&lt;span style="Color:Red;"&gt;Contrary to popular belief,.....&lt;/span&gt;
  </code></pre>
  
  <p>Pls help...!</p>