title: LESS Mixin for Line-height
body: <p>I am using this mixin to generate rem font-size with fallback pixel sizes, but to also generate a line-height that is 1.5 times the font-size.</p>
  
  <pre><code>.font(@size: 16px, @line: @size) {
  @remfont: (@size / 10);
  @remline: (@size / 10) * 1.5;
  font-size: @size * 1px;
  font-size: ~"@{remfont}rem";
  line-height: @size * 1.5px;
  line-height: ~"@{remline}rem";
  }
  </code></pre>
  
  <p>The negative is that is requires me to enter a value for my line-height, although it will not be needed once compiled. My LESS using this mixin is as such:</p>
  
  <pre><code>.font (13, 10);
  </code></pre>
  
  <p>And results in this outpu:</p>
  
  <pre><code>font-size: 13px;
  font-size: 1.3rem;
  line-height: 19.5px;
  line-height: 1.9500000000000002rem;
  </code></pre>
  
  <p>Is there a way to rework this mixin so that it will output a line-height that is 1.5 times my font-size, without needing to enter a value?</p>