.posts {
  @include whitespacefix;
  @include c6;
  @include nogutters;

  .post {
    @include inlineblock;
    @include c2;
    @include regular;
  }
}

.posts {
  @include parentgrid;
  @include regular;
  @include gradient-background(blue, red);
  @include foobar-icon;
  @include some-magic;

  .post {
    @include brown-border;
    @include margin(biggest);
    @include griditem(c2, regular);
    @include small;
  }
}