// Additionnal "utility" breakpoints aliases
// ex. @include respond-to("medium-up") {...}
breakpoint(bp)
  if bp == 'tiny'
    return '(max-width: {tiny})'
  else if bp == 'small'
    return '(max-width: {small})'
  else if bp == 'medium'
    return '(max-width: {medium})'
  else if bp == 'large'
    return '(max-width: {large})'
  else if bp == 'extra-large'
    return '(max-width: {extra-large})'
  else if bp == 'tiny-up'
    return '(min-width: {tiny + 1})'
  else if bp == 'small-up'
    return '(min-width: {small + 1})'
  else if bp == 'medium-up'
    return '(min-width: {medium + 1})'
  else if bp == 'large-up'
    return '(min-width: {large + 1})'
  else if bp == 'extra-large-up'
    return '(min-width: {extra-large + 1})'
  else if bp == 'retina'
    return '(-webkit-min-device-pixel-ratio: 2), (min-resolution: 192dpi), (min-resolution: 2dppx)'


/*
respond-to(value)
  string = breakpoint(value)
  @media screen and {string}
    {block}
*/