@mixin gradient-background($left-color: #204ba3, $right-color: #2a61d4) {
  $sdn-footer-outer-background: linear-gradient(
    to right,
    $left-color 0%,
    $left-color 50%,
    $right-color 50%,
    $right-color 100%
  );

  background: $left-color;
  @include govuk-media-query($from: desktop) {
    background: $sdn-footer-outer-background;
  }
}