title: Border Gradient with Border Radius
body: <p>I have the following CSS:</p>
  <pre><code>a.btn.white-grad {
      background: $lgrey;
      color: #313149 !important;
      border: 1px solid #000;
      border-image-source: linear-gradient(to right, #9c20aa, #fb3570);
      border-image-slice: 20;
      float: left;
      @include font-size(26);
      margin: 75px 0;
  }
  </code></pre>
  <p>Adding <code>border-radius: 5px</code> doesn't seem to do anything. I figured it's because I'm using a border gradient... is there a way for me to achieve the desired 5px border radius at all?</p>