title: How to chain a class to an element with a parent selector in SASS
body: <p>I'm trying to do the following with SASS (scss).</p>
  
  <pre><code>.class {
    // Base class styles
  
    a.&amp; {
      // Additions for when applied to a link
    }
  }
  </code></pre>
  
  <p>But I get a compiler error:</p>
  
  <p><code>Invalid CSS after "a.": expected class name, was "&amp;"</code></p>
  
  <p>Any ideas how to achieve this?
  Currently I just break out of nesting, but it's sub optimal for my case.</p>
  
  <p>Thanks!</p>