1 // Image Mixins 2 // - Responsive image 3 // - Retina image 4 5 6 // Responsive image 7 // 8 // Keep images from scaling beyond the width of their parents. 9 .img-responsive(@display: block) { 10 display: @display; 11 max-width: 100%; // Part 1: Set a maximum relative to the parent 12 height: auto; // Part 2: Scale the height according to the width, otherwise you get stretching 13 } 14 15 16 // Retina image 17 // 18 // Short retina mixin for setting background-image and -size. Note that the 19 // spelling of `min--moz-device-pixel-ratio` is intentional. 20 .img-retina(@file-1x; @file-2x; @width-1x; @height-1x) { 21 background-image: url("@{file-1x}"); 22 23 @media 24 only screen and (-webkit-min-device-pixel-ratio: 2), 25 only screen and ( min--moz-device-pixel-ratio: 2), 26 only screen and ( -o-min-device-pixel-ratio: 2/1), 27 only screen and ( min-device-pixel-ratio: 2), 28 only screen and ( min-resolution: 192dpi), 29 only screen and ( min-resolution: 2dppx) { 30 background-image: url("@{file-2x}"); 31 background-size: @width-1x @height-1x; 32 } 33 } 34
