.posts-wrapper {
  .sidebar {
    @include inlineblock;
    @include c2;
    @include regular;
  }
  
  .posts {
    @include whitespacefix;
    @include c4;
    @include nogutters;
  
    .post {
      @include inlineblock;
      @include c2;
      @include regular;
    }
  }

}

.posts-wrapper {
  @include parentgrid(c6);
  
  .sidebar { @include griditem(c2, regular); }
  
  .posts { 
    @include parentgrid(c4); 
    .post { @include griditem(c2, regular); }
  }
}