From 0ef64d89f7fbf7c4eb306569b050720e240dde6b Mon Sep 17 00:00:00 2001
From: Kovah <mail@kovah.de>
Date: Fri, 9 Sep 2016 06:48:17 +0200
Subject: Add breakpoint-specific gutters.

---
 scss/_variables.scss             | 12 +++++++++---
 scss/mixins/_grid-framework.scss | 10 +++-------
 scss/mixins/_grid.scss           | 36 +++++++++++++++++++++++++++++-------
 3 files changed, 41 insertions(+), 17 deletions(-)

(limited to 'scss')

diff --git a/scss/_variables.scss b/scss/_variables.scss
index 86a29e23c..d8b67b322 100644
--- a/scss/_variables.scss
+++ b/scss/_variables.scss
@@ -150,9 +150,15 @@ $container-max-widths: (
 //
 // Set the number of columns and specify the width of the gutters.
 
-$grid-columns:      12 !default;
-$grid-gutter-width: 30px !default;
-
+$grid-columns:               12 !default;
+$grid-gutter-width-base:     30px !default;
+$grid-gutter-widths: (
+  xs: $grid-gutter-width-base,
+  sm: $grid-gutter-width-base,
+  md: $grid-gutter-width-base,
+  lg: $grid-gutter-width-base,
+  xl: $grid-gutter-width-base
+) !default;
 
 // Typography
 //
diff --git a/scss/mixins/_grid-framework.scss b/scss/mixins/_grid-framework.scss
index 8b17d7843..0e3852e24 100644
--- a/scss/mixins/_grid-framework.scss
+++ b/scss/mixins/_grid-framework.scss
@@ -3,20 +3,18 @@
 // Used only by Bootstrap to generate the correct number of grid classes given
 // any value of `$grid-columns`.
 
-@mixin make-grid-columns($columns: $grid-columns, $gutter: $grid-gutter-width, $breakpoints: $grid-breakpoints) {
-
+@mixin make-grid-columns($columns: $grid-columns, $gutters: $grid-gutter-widths, $breakpoints: $grid-breakpoints) {
   // Common properties for all breakpoints
   %grid-column {
     position: relative;
     // Prevent columns from collapsing when empty
     min-height: 1px;
-    // Inner gutter via padding
-    padding-right: ($gutter / 2);
-    padding-left: ($gutter / 2);
 
     @if $enable-flex {
       width: 100%;
     }
+
+    @include make-gutters($gutters);
   }
 
   $breakpoint-counter: 0;
@@ -38,8 +36,6 @@
           flex-grow: 1;
           max-width: 100%;
           min-height: 1px;
-          padding-right: ($grid-gutter-width / 2);
-          padding-left:  ($grid-gutter-width / 2);
         }
       }
 
diff --git a/scss/mixins/_grid.scss b/scss/mixins/_grid.scss
index fa9b3995b..b381ba900 100644
--- a/scss/mixins/_grid.scss
+++ b/scss/mixins/_grid.scss
@@ -2,7 +2,7 @@
 //
 // Generate semantic grid columns with these mixins.
 
-@mixin make-container($gutter: $grid-gutter-width) {
+@mixin make-container($gutter: $grid-gutter-width-base) {
   margin-left: auto;
   margin-right: auto;
   padding-left:  ($gutter / 2);
@@ -22,22 +22,36 @@
   }
 }
 
-@mixin make-row($gutter: $grid-gutter-width) {
+@mixin make-gutters($gutters: $grid-gutter-widths) {
+  @each $breakpoint in map-keys($gutters) {
+    @include media-breakpoint-up($breakpoint) {
+      $gutter: map-get($gutters, $breakpoint);
+      padding-right: ($gutter / 2);
+      padding-left:  ($gutter / 2);
+    }
+  }
+}
+
+@mixin make-row($gutters: $grid-gutter-widths) {
   @if $enable-flex {
     display: flex;
     flex-wrap: wrap;
   } @else {
     @include clearfix();
   }
-  margin-left:  ($gutter / -2);
-  margin-right: ($gutter / -2);
+
+  @each $breakpoint in map-keys($gutters) {
+    @include media-breakpoint-up($breakpoint) {
+      $gutter: map-get($gutters, $breakpoint);
+      margin-right: ($gutter / -2);
+      margin-left:  ($gutter / -2);
+    }
+  }
 }
 
-@mixin make-col-ready($gutter: $grid-gutter-width) {
+@mixin make-col-ready($gutters: $grid-gutter-widths) {
   position: relative;
   min-height: 1px; // Prevent collapsing
-  padding-right: ($gutter / 2);
-  padding-left:  ($gutter / 2);
 
   // Prevent columns from becoming too narrow when at smaller grid tiers by
   // always setting `width: 100%;`. This works because we use `flex` values
@@ -45,6 +59,14 @@
   @if $enable-flex {
     width: 100%;
   }
+
+  @each $breakpoint in map-keys($gutters) {
+    @include media-breakpoint-up($breakpoint) {
+      $gutter: map-get($gutters, $breakpoint);
+      padding-right: ($gutter / 2);
+      padding-left:  ($gutter / 2);
+    }
+  }
 }
 
 @mixin make-col($size, $columns: $grid-columns) {
-- 
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