title: Create transitions variable with Sass
body: <p>Is there a way to create a variable for transitions in Sass to replicate this:</p>
  
  <pre><code>-webkit-transition: .2s;
  -moz-transition: .2s;
  -ms-transition: .2s;
  -o-transition: .2s;
  transition: .2s;
  </code></pre>
  
  <p>I'm just getting my feet wet with Sass and I'm using CodeKit to compile.</p>
  
  <p>Thanks!</p>