title: Calculating width from percent to pixel then minus by pixel in LESS CSS
body: <p>I will calculate width in some element from percent to pixel so I will minus -10px via using <strong>LESS</strong> and <strong>calc()</strong>. It´s possible?</p>
  
  <pre><code>div {
      span {
          width:calc(100% - 10px);
      }
  }
  </code></pre>
  
  <p>I using CSS3 <code>calc()</code> so it doesn't work: <code>calc(100% - 10px)</code></p>
  
  <blockquote>
    <p><strong>Example:</strong> if 100% = 500px so width = 490px (500-10);</p>
  </blockquote>
  
  <p>I made a demo for testing : <a href="http://jsfiddle.net/4DujZ/55/" rel="noreferrer">http://jsfiddle.net/4DujZ/55/</a></p>
  
  <p>so padding will say: <strong>5</strong> (10px / 2) all the time when I resizing.</p>
  
  <p>Can I do it in <strong>LESS</strong>? I know how to do in jQuery and simple CSS like margin padding or else...  but i will try to do functional in <strong>LESS</strong> with <code>calc()</code></p>