@media (--breakpoint-md) {
  .md-relative { position: relative }
  .md-absolute { position: absolute }
  .md-fixed    { position: fixed }

  .md-top-0    { top: 0 }
  .md-right-0  { right: 0 }
  .md-bottom-0 { bottom: 0 }
  .md-left-0   { left: 0 }
}