compass scss tab mixin

tabs.scss

@import "colors";
@import "buttons.scss";
@import "compass/css3";

@mixin tabs {
  float: left;
  width: 100%;
  background: transparent;
  margin: 0!important;
  height: 43px;
  li {
    a {
      padding: 15px 8px 15px 50px;
      font-weight: 0;
      color: #888;
      color: $light-text;
    }
    a.active {
      color: $darkest;
      background: $lightest;
    }
  }
  li.glossary a {
    background: url("../images/vocabulary.png") no-repeat left;
  }  
  li.overview a {
    background: url("../images/discussion.png") no-repeat left;
  }
}

This would be included like this in another scss file, to be rendered into a css file, like this — 

@import "tabs

ul#navigation {
@include tabs;
}

thanks