@import variables @mixin custom-device($width) @media (max-width: #{$width}) @content @mixin xs-device @media (max-width: #{$xs-device-width}) @content @mixin sm-device @media (max-width: #{$sm-device-width}) @content @mixin md-device @media (min-width: #{$sm-device-width}) and (max-width: #{$md-device-width}) @content @mixin grid($columns: 0) box-sizing: border-box display: flex flex-wrap: wrap > * box-sizing: border-box > * width: (1/$columns) * 100% @mixin grid_width($width) width: $width * 100%