Breakpoint with IE8 Compatibility

breakpoint-ie.scss

@import "compass";
@import "breakpoint";

$tablet: 500px;
$desktop: 960px;

@mixin desktop {
  @include breakpoint($desktop) {
    @content;
  }
  .old-ie & {
    @content;
  }
}

//////////////////////////////////////////////////////////////////////////////////////////////
// EXAMPLE STYLES
#footer .menu-block {
  width: 96%;
  margin: 0 2%;
  @include desktop {
    width: 29.5%;
    background: gray;
  }
}