// Image Mixins // - Responsive image // - Retina image // Responsive image // // Keep images from scaling beyond the width of their parents. @mixin img-fluid { // Part 1: Set a maximum relative to the parent max-width: 100%; // Part 2: Override the height to auto, otherwise images will be stretched // when setting a width and height attribute on the img element. height: auto; } // Retina image // // Short retina mixin for setting background-image and -size. // stylelint-disable indentation, media-query-list-comma-newline-after @mixin img-retina($file-1x, $file-2x, $width-1x, $height-1x) { background-image: url($file-1x); // Autoprefixer takes care of adding -webkit-min-device-pixel-ratio and -o-min-device-pixel-ratio, // but doesn't convert dppx=>dpi. // There's no such thing as unprefixed min-device-pixel-ratio since it's nonstandard. // Compatibility info: https://caniuse.com/#feat=css-media-resolution @media only screen and (min-resolution: 192dpi), // IE9-11 don't support dppx only screen and (min-resolution: 2dppx) { // Standardized background-image: url($file-2x); background-size: $width-1x $height-1x; } }