My Sass Media Query Mixin...cos I keep forgetting to share this.

Media Query Mixin

//=My breakpoint variables 
//Usually kept in _variables.scss

$breakpoint-extra-small: 20em;    //320px
$breakpoint-small: 30em;          //480px
$breakpoint-medium: 50em;         //800px
$breakpoint-extra-medium: 65em;   //1040px
$breakpoint-large: 80em;          //1280px
$breakpoint-extra-large: 100em;   //1600px



//=Media Queries Mixin
//Usually kept in _mixins.scss

@mixin MQ($canvas) {
  @if $canvas == XS {
    @media all and (min-width: $breakpoint-extra-small) {
      @content;
    }
  } @else if $canvas == S {
    @media all and (min-width: $breakpoint-small) {
      @content;
    }
  } @else if $canvas == M {
    @media all and (min-width: $breakpoint-medium) {
      @content;
    }
  } @else if $canvas == XM {
    @media all and (min-width: $breakpoint-extra-medium) {
      @content;
    }
  } @else if $canvas == L {
    @media all and (min-width: $breakpoint-large) {
      @content;
    }
  } @else if $canvas == XL {
    @media all and (min-width: $breakpoint-extra-large) {
      @content;
    }
  }
}



//=Usage Example

html {
  font-size: 65%;

  @include MQ(XS) {
    font-size: 75%;
  }

  @include MQ(S) {
    font-size: 85%;
  }

  @include MQ(M) {
    font-size: 100%;
  }

  @include MQ(L) {
    font-size: 120%;
  }

  @include MQ(XL) {
    font-size: 125%;
  }
}

//easy peasy!