aha! good catch. One note though. When I used css-comb's default ordering, which I thought was consistent with our standards, I got the following ordering: 

      @include box-sizing(border-box);
      position: absolute;
      top: 0;
      left: 0;
      padding: $baseline/4 $baseline/2;
      width: 100%;
      border-bottom: 1px solid $gray-l4;
      background-color: $gray-l6;

It may be that I modified my css-comb defaults and didn't remember to update it when I moved to Sublime Text 3. If this ordering is in fact off we may need to share our ordering script for css-comb.