@import 'grid';

.container {
  margin: 0px auto;
  width: @total_width;
}

.test{
  height: 50px;
  background: blue;
  .grid(8);
}
.test_nest_first{
  height: 50px;
  background: red;
  .grid_alpha(4);
}
.test_nest_last{
  height: 50px;
  background: purple;
  .grid_omega(4);
}

RESULTS IN:

.container {
  margin: 0px auto;
  width: 960px;
}
.test {
  height: 50px;
  background: blue;
  width: 472px;
  margin: 0px 4px;
  float: left;
}
.test_nest_first {
  height: 50px;
  background: red;
  width: 232px;
  margin: 0px 4px 0px 0px;
  float: left;
}
.test_nest_last {
  height: 50px;
  background: purple;
  width: 232px;
  margin: 0px 0px 0px 4px;
  float: left;
}