title: Not last child mixin SASS
body: <p>Is it possible to turn this:</p>
  
  <pre><code>.redstripe p:not(last-child) {
    border-bottom:1px solid red;
  }
  </code></pre>
  
  <p>Into a mixin so that I can apply it to any element and assign a child tag to it like:</p>
  
  <pre><code>@mixin redstripe (this.$children):not(last-child) {
    border-bottom:1px solid red;
  }
  </code></pre>
  
  <p>And then apply:</p>
  
  <pre><code>div {
    @include redstripe(p);
  }
  </code></pre>
  
  <p>What is the correct way to implement this?</p>