Template:Flex container/styles.css

/* acontainer for desktop */
@media all and ( min-width: 720px ) {
  .acontainer {
    display: flex;
    flex-wrap: nowrap;
    justify-content: space-between;
    flex-direction: row;
  }
}
/* acontainer for mobile */
@media all and ( max-width: 720px ) {
  .acontainer {
    display: flex;
    flex-wrap: wrap;
    justify-content: space-between;
    flex-direction: row;
  }
}