@if $font-size { html { font-size: $font-size; } } body { line-height: $line-height; } @function font-size-from-ratio($ratio) { $numerator: nth($ratio, 1); $denumerator: nth($ratio, 2); @return calc(1em * (#{$numerator} / #{$denumerator})); } @mixin header($ratio) { $numerator: nth($ratio, 1); $denumerator: nth($ratio, 2); font-size: font-size-from-ratio($ratio); $leading-multiplier: ceil($numerator / $denumerator); line-height: calc(#{$leading-multiplier} * #{$leading-height}); } $double-great-primer-ratio: 36, 12; $double-pica-ratio: 24, 12; $double-small-pica-ratio: 21, 12; $great-primer-ratio: 18, 12; $english-ratio: 14, 12; $pica-ratio: 12, 12; $small-pica-ratio: 11, 12; $long-primer-ratio: 10, 12; $bourgeois-ratio: 9, 12; $brevier-ratio: 8, 12; $minion-ratio: 7, 12; $nonpareil-ratio: 6, 12; $double-great-primer: font-size-from-ratio($double-great-primer-ratio); $double-pica: font-size-from-ratio($double-pica-ratio); $double-small-pica: font-size-from-ratio($double-small-pica-ratio); $great-primer: font-size-from-ratio($great-primer-ratio); $english: font-size-from-ratio($english-ratio); $pica: font-size-from-ratio($pica-ratio); $small-pica: font-size-from-ratio($small-pica-ratio); $long-primer: font-size-from-ratio($long-primer-ratio); $bourgeois: font-size-from-ratio($bourgeois-ratio); $brevier: font-size-from-ratio($brevier-ratio); $minion: font-size-from-ratio($minion-ratio); $nonpareil: font-size-from-ratio($nonpareil-ratio); h1 { @include header($double-great-primer-ratio); } h2 { @include header($double-pica-ratio); } h3 { @include header($double-small-pica-ratio); } h4 { @include header($great-primer-ratio); } h5 { @include header($english-ratio); } h6 { @include header($pica-ratio); } p, ul, ol { margin-bottom: $leading-height; } ul ol, ol ol, ul ul, ol ul { margin-bottom: 0; } ul { list-style-type: disc; margin-left: $indent-width; } ol { list-style-type: decimal; margin-left: $indent-width; } sub { line-height: 0; vertical-align: sub; font-size: $long-primer; } sup { line-height: 0; vertical-align: super; font-size: $long-primer; }