title: Adding icon image to css class for html elements
body: <p>I need to add icon image to HTML elements like this in case of font awesome and bootstrap.</p>
  
  <p>Like this</p>
  
  <p><img src="https://i.stack.imgur.com/W2kYp.png" alt="enter image description here"></p>
  
  <p>for example I need to associate icon image with css class. Let say class name is ico and if I do something like this</p>
  
  <pre><code> &lt;a href="#" class="ico"&gt;Email Link&lt;/a&gt;
  </code></pre>
  
  <p>Then it should appear as in the image above.</p>
  
  <p>How can I accomplish this very important feature for UI design using CSS?</p>