title: How do you strip the unit from any number in SASS?
body: <p>I know you can strip units from numbers in SASS when you know the unit before-hand like this:</p>
  
  <pre><code>$number: 16px;
  $without-unit: 16px / 1px;
  @warn $without-unit; // 16
  </code></pre>
  
  <p>But is it possible to strip the unit from a number without knowing what the unit is first?</p>
  
  <pre><code>@function strip-unit($number) {
    // magic code here...
  }
  
  @warn strip-unit(16px); // 16
  </code></pre>