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A Sass mixin for maintaining vertical rhythm
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| $font-size: 16px; | |
| $line-height-ratio: 1.5; | |
| $line-height-base: 1rem * $line-height-ratio; | |
| // base line-height = 16px * 1.5 = 24px | |
| html { | |
| font-size: $font-size; | |
| line-height: $line-height-ratio; | |
| background: url(http://basehold.it/i/24); | |
| } | |
| * { | |
| margin-top: 0; | |
| margin-bottom: 0; | |
| padding-top: 0; | |
| padding-bottom: 0; | |
| } | |
| @mixin vertical-rhythm($font-size, $bottom-rows: 1, $top-rows: 0, $use-height: false, $border: 0rem) { | |
| $font-size: $font-size; | |
| $border: $border; | |
| $multiplier: ceil($font-size / $line-height-base); | |
| // check if height-based element | |
| // if so use height property for height, otherwise use line-height property | |
| @if $use-height { | |
| $leftover: $line-height-base * $multiplier - $font-size; | |
| height: $font-size; | |
| margin-top: $line-height-base * $top-rows + $leftover / 2; | |
| margin-bottom: $line-height-base * $bottom-rows + $leftover / 2; | |
| } | |
| @else { // text based element (uses line-height) | |
| font-size: $font-size; | |
| line-height: $line-height-base * $multiplier; | |
| margin-top: $line-height-base * $top-rows; | |
| margin-bottom: $line-height-base * $bottom-rows - $border; | |
| } | |
| } | |
| h1 { | |
| @include vertical-rhythm(2.4rem, 1, 1); | |
| } | |
| h2 { | |
| // example usage | |
| @include vertical-rhythm(2rem); | |
| } | |
| p + p { | |
| margin-top: 1.5rem; | |
| } |
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