// Image Mixins

// - Responsive image

// - Retina image

// Responsive image

//

// Keep images from scaling beyond the width of their parents.

@mixin img-responsive($display: block) {

  display: $display;

  max-width: 100%; // Part 1: Set a maximum relative to the parent

  height: auto; // Part 2: Scale the height according to the width, otherwise you get stretching

}

// Retina image

//

// Short retina mixin for setting background-image and -size. Note that the

// spelling of `min--moz-device-pixel-ratio` is intentional.

@mixin img-retina($file-1x, $file-2x, $width-1x, $height-1x) {

  background-image: url(if($bootstrap-sass-asset-helper, twbs-image-path("#{$file-1x}"), "#{$file-1x}"));

  @media

  only screen and (-webkit-min-device-pixel-ratio: 2),

  only screen and (   min--moz-device-pixel-ratio: 2),

  only screen and (     -o-min-device-pixel-ratio: 2/1),

  only screen and (        min-device-pixel-ratio: 2),

  only screen and (                min-resolution: 192dpi),

  only screen and (                min-resolution: 2dppx) {

    background-image: url(if($bootstrap-sass-asset-helper, twbs-image-path("#{$file-2x}"), "#{$file-2x}"));

    background-size: $width-1x $height-1x;

  }

}