.container {
  margin-right: auto;
  margin-left: auto;
  font-size: 0;
}

  .container.cols_pd10,
  .container.cols_pd10 > .cols {
    padding: 5px;
  }

  .container.cols_pd15,
  .container.cols_pd15 > .cols {
    padding: 7.5px;
  }

  .container.cols_pd20,
  .container.cols_pd20 > .cols {
    padding: 10px;
  }

  .container.cols_pd25,
  .container.cols_pd25 > .cols {
    padding: 12.5px;
  }

  .container.cols_pd30,
  .container.cols_pd30 > .cols {
    padding: 15px;
  }

/* --- */

.cols {
  display: inline-block;
  vertical-align: top;
  font-size: 12px;
}

/* --- */

.divTstCol .cols {
  border: 1px dashed #CCC;
}