title: Stack bootstrap glyphicons
body: <p>I'm using the following bootstrap icon </p>
  
  <pre><code>class="glyphicon glyphicon-plus"
  </code></pre>
  
  <p>and I want to change the color of the button and I use the following 
  But now I want that the plus icon will be in circle like this ,how should I do that? <img src="https://i.stack.imgur.com/d1rsQ.jpg" alt="enter image description here"></p>
  
  <pre><code>    i.glyphicon {
          color: white;
      }
  </code></pre>