md-composer-color-plus-ultra/desktop/desktop.scss

[data-wrap="columns"] {
  width: 50%;
  float: left;
  border-right: 1px solid black;
  padding-right: 5px;
  margin-right: 5px;
}

[data-wrap="floatl"] {
  float: left;
  margin-right: 10px;
}

[data-wrap="floatr"] {
  float: right;
  margin-left: 10px;
}