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// Image Mixins
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// - Responsive image
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// - Retina image
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// Responsive image
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//
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// Keep images from scaling beyond the width of their parents.
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@mixin img-fluid() {
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// Part 1: Set a maximum relative to the parent
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max-width: 100%;
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// Part 2: Override the height to auto, otherwise images will be stretched
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// when setting a width and height attribute on the img element.
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height: auto;
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}
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// Retina image
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//
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// Short retina mixin for setting background-image and -size.
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@mixin img-retina($file-1x, $file-2x, $width-1x, $height-1x) {
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background-image: url($file-1x);
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// Autoprefixer takes care of adding -webkit-min-device-pixel-ratio and -o-min-device-pixel-ratio,
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// but doesn't convert dppx=>dpi.
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// There's no such thing as unprefixed min-device-pixel-ratio since it's nonstandard.
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// Compatibility info: https://caniuse.com/css-media-resolution
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@media only screen and (min-resolution: 192dpi), // IE9-11 don't support dppx
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only screen and (min-resolution: 2dppx) { // Standardized
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background-image: url($file-2x);
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background-size: $width-1x $height-1x;
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}
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@include deprecate("`img-retina()`", "v4.3.0", "v5");
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}
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