7 // Keep images from scaling beyond the width of their parents.
8 @mixin img-responsive($display: block) {
10 max-width: 100%; // Part 1: Set a maximum relative to the parent
11 height: auto; // Part 2: Scale the height according to the width, otherwise you get stretching
16 // Short retina mixin for setting background-image and -size. Note that the
17 // spelling of `min--moz-device-pixel-ratio` is intentional.
18 @mixin img-retina($file-1x, $file-2x, $width-1x, $height-1x) {
19 background-image: url(if($bootstrap-sass-asset-helper, twbs-image-path("#{$file-1x}"), "#{$file-1x}"));
21 @media only screen and (-webkit-min-device-pixel-ratio: 2),
22 only screen and (min--moz-device-pixel-ratio: 2),
23 only screen and (-o-min-device-pixel-ratio: 2/1),
24 only screen and (min-device-pixel-ratio: 2),
25 only screen and (min-resolution: 192dpi),
26 only screen and (min-resolution: 2dppx) {
27 background-image: url(if($bootstrap-sass-asset-helper, twbs-image-path("#{$file-2x}"), "#{$file-2x}"));
28 background-size: $width-1x $height-1x;