// Small devices @mixin sm { @media (min-width: #{$screen-sm-min}) { @content; } } // Medium devices @mixin md { @media (min-width: #{$screen-md-min}) { @content; } } // Large devices @mixin lg { @media (min-width: #{$screen-lg-min}) { @content; } } // Extra large devices @mixin xl { @media (min-width: #{$screen-xl-min}) { @content; } } // Custom devices @mixin rwd($screen) { @media (min-width: $screen+'px') { @content; } } // medium to small devices @mixin sm_max { @media (max-width: #{$screen-md-min}) { @content; } }