@import "bootstrap/variables" =respond-to($media) @if $media == xs @media (max-width: $screen-xs-max) @content @else if $media == sm @media (min-width: $screen-sm-min) and (max-width: $screen-sm-max) @content @else if $media == md @media (min-width: $screen-md-min) and (max-width: $screen-md-max) @content @else if $media == lg @media (min-width: $screen-lg-min) @content @else if $media == x2 @media only screen and (-Webkit-min-device-pixel-ratio: 1.5), only screen and (-moz-min-device-pixel-ratio: 1.5), only screen and (-o-min-device-pixel-ratio: 3/2), only screen and (min-device-pixel-ratio: 1.5) @content // @media only screen and (-webkit-min-device-pixel-ratio: 1.3), only screen and (-o-min-device-pixel-ratio: 13/10), only screen and (min-resolution: 120dpi) @else @error "zły typ media #{$media}"