*,
*:before,
*:after {
  box-sizing: border-box;
}
.container {
  margin: 0 auto;
  max-width: 90%;
}
.row {
  display: flex;
  flex-flow: row wrap;
  margin: 0 -10px;
  margin-bottom: 10px;
}
[class*="col-"] {
  padding: 10px;
  width: 100%;
}
@media all and ( min-width: 600px ) {
  .col-2-3 {
    width: 66.66%;
  }
  .col-1-3 {
    width: 33.33%;
  }
}