pkg image/color, type Gray struct, Y uint8
pkg image/color, type Gray16 struct
pkg image/color, type Gray16 struct, Y uint16
pkg image/color, type Model interface { Convert }
pkg image/color, type Model interface, Convert(Color) Color
pkg image/color, type NRGBA struct
pkg image/color, type NRGBA struct, A uint8
pkg image/color, type NRGBA struct, B uint8
pkg image/color, type NRGBA struct, G uint8

pkg reflect, func MapOf(Type, Type) Type
pkg reflect, func Select([]SelectCase) (int, Value, bool)
pkg reflect, func SliceOf(Type) Type
pkg reflect, method (Value) Convert(Type) Value
pkg reflect, type SelectCase struct
pkg reflect, type SelectCase struct, Chan Value
pkg reflect, type SelectCase struct, Dir SelectDir
pkg reflect, type SelectCase struct, Send Value

background-image and -size.\n\n@mixin img-retina($file-1x, $file-2x, $width-1x, $height-1x) {\n  background-image: url($file-1x);\n\n  // Autoprefixer takes care of adding -webkit-min-device-pixel-ratio and -o-min-device-pixel-ratio,\n  // but doesn't convert dppx=>dpi.\n  // There's no such thing as unprefixed min-device-pixel-ratio since it's nonstandard.\n  // Compatibility info: https://caniuse.com/css-media-resolution\n  @media only screen and (min-resolution: 192dpi), // IE9-11 don't support dppx\n...