title: Is there a way to get the set width of the current element in SASS?
body: <p>Tp center absolutely positioned elements I have to devide the current width in half and set that as the negative left margin value. But I don't want to have to do:</p>
  
  <pre><code>#elem {
      width: 75px;
      margin-left: -(75/2)px;
  }
  </code></pre>
  
  <p>Since now if I update the width I have to update it in 2 places. Instead is it possible to reference the set width for the current selector in some way in SASS?</p>
  
  <p>Psudo code:</p>
  
  <pre><code>#elem {
      width: 75px;
      margin-left: -(this.width/2)px;
  }
  </code></pre>