file.less

@media (min-width: 1200px) {
  @import "large-display.less";
}

@media (min-width: 980px) and (max-width: 1199px) {
  @import "desktop.less";
}

@media (min-width: 768px) and (max-width: 979px) {
  @import "portrait-tablets.less";
}

@media (min-width: 480px) and (max-width: 767px) {
  @import "phones-to-tablets.less";
}

@media (max-width: 480px) {
  @import "phones.less";
}