//

@mixin img-fluid() {
    max-width: 100%;
      height: auto;
}


//

@mixin img-retina($file-1x, $file-2x, $width-1x, $height-1x) {
  background-image: url($file-1x);

          @media only screen and (min-resolution: 192dpi),     only screen and (min-resolution: 2dppx) {     background-image: url($file-2x);
    background-size: $width-1x $height-1x;
  }
  @include deprecate("`img-retina()`", "v4.3.0", "v5");
}