shift($span)¶ ↑
$n: nth($span, 1) $parent-n: parent-columns($span) $expression: "(100% + #{$gutter}) * #{$n / $parent-n}" $fallback: ($fallback-width - $gutter) * $n / $columns +calc(margin-left, $expression, $fallback) @each $breakpoint in $breakpoints +media($breakpoint) $parent-n: parent-columns($span) $expression: "(100% + #{$gutter}) * #{$n / $parent-n}" $fallback: ($fallback-width - $gutter) * $n / $columns +calc(margin-left, $expression, $fallback)