oneplusfourgrid_section.css in Drupal 8

/*
 * @file
 * Provides the layout styles for two-column layout section.
 */

.layout--oneplusfourgrid-section {
  display: flex;
  flex-wrap: wrap;
}

.layout--oneplusfourgrid-section > .layout__region {
  flex: 0 1 100%;
}

/* Large */
@media screen and (min-width: 60rem) { /* 960px */
  .layout--oneplusfourgrid-section {
    margin-right: -1.5%;
    margin-left: -1.5%;
  }
  .layout--oneplusfourgrid-section > .layout__region--first {
    flex: 0 1 47%;
    margin-right: 1.5%;
    margin-left: 1.5%;
  }
  .layout--oneplusfourgrid-section > .layout__four-grid-group {
    display: flex;
    flex: 0 1 50%;
    flex-wrap: wrap;
  }
  .layout__four-grid-group > .layout__region--second,
  .layout__four-grid-group > .layout__region--third,
  .layout__four-grid-group > .layout__region--fourth,
  .layout__four-grid-group > .layout__region--fifth {
    flex: 0 1 44%;
    margin-right: 3%;
    margin-left: 3%;
  }
}