title: Semi-transparent navbar with buttons in other color
body: <p>I have a navbar with </p>
  
  <pre><code>background-color:rgba(255, 255, 255, 0.7);
  </code></pre>
  
  <p>and I want to make one button in different color, but still semi-transparent.
  The problem is that it overlays navbar background color, and I want to override it. 
  I can set background color to buttons separately. </p>
  
  <p>But in this case I don't know, how to set color to space between them.</p>
  
  <p><a href="http://www.bootply.com/5VQGFDHZfq" rel="nofollow">http://www.bootply.com/5VQGFDHZfq</a></p>