angular/adev/shared-docs/styles/_media-queries.scss

$screen-xs: 700px;
$screen-sm: 775px;
$screen-md: 900px;
$screen-lg: 1200px;
$screen-xl: 1430px;
$screen-xxl: 1800px;

@mixin breakpoints-vars {
  // The app-scroller also relies on these values to determine the scroll offset.
  :root {
    --screen-xs: #{$screen-xs};
    --screen-sm: #{$screen-sm};
    --screen-md: #{$screen-md};
    --screen-lg: #{$screen-lg};
    --screen-xl: #{$screen-xl};
    --screen-xxl: #{$screen-xxl};
  }
}

@mixin for-phone-only {
  @media (max-width: $screen-xs) {
    @content;
  }
}

@mixin for-tablet-portrait-up {
  @media (min-width: calc($screen-xs + 0.01px)) {
    @content;
  }
}

@mixin for-tablet {
  @media (min-width: calc($screen-xs + 0.01px)) and (max-width: $screen-md) {
    @content;
  }
}

@mixin for-tablet-up {
  @media (min-width: calc($screen-sm + 0.01px)) {
    @content;
  }
}

@mixin for-tablet-landscape-up {
  @media (min-width: calc($screen-md + 0.01px)) {
    @content;
  }
}

@mixin for-desktop-up {
  @media (min-width: calc($screen-lg + 0.01px)) {
    @content;
  }
}

@mixin for-large-desktop-up {
  @media (min-width: calc($screen-xl + 0.01px)) {
    @content;
  }
}

@mixin for-extra-large-desktop-up {
  @media (min-width: calc($screen-xxl + 0.01px)) {
    @content;
  }
}

@mixin for-desktop-down {
  @media (max-width: $screen-lg) {
    @content;
  }
}

@mixin for-large-desktop-down {
  @media (max-width: calc($screen-xl )) {
    @content;
  }
}

@mixin for-tablet-landscape-down {
  @media (max-width: $screen-md) {
    @content;
  }
}

@mixin for-tablet-down {
  @media (max-width: $screen-sm) {
    @content;
  }
}