Split grid & containers

scss/_containers.scss

@@ -0,0 +1,45 @@
+// Container widths
+//
+// Set the container width, and override it for fixed navbars in media queries.
+
+@if $enable-grid-classes {
+  // Single container class with breakpoint max-widths
+  .container {
+    @include make-container();
+    @include make-container-max-widths();
+  }
+
+  // 100% wide container at all breakpoints
+  .container-fluid {
+    @include make-container();
+  }
+
+  // Responsive containers that are 100% wide until a breakpoint
+  @each $breakpoint, $container-max-width in $container-max-widths {
+    .container-#{$breakpoint} {
+      @extend .container-fluid;
+    }
+
+    @include media-breakpoint-up($breakpoint, $grid-breakpoints) {
+      %responsive-container-#{$breakpoint} {
+        max-width: $container-max-width;
+      }
+
+      // Extend each breakpoint which is smaller or equal to the current breakpoint
+      $extend-breakpoint: true;
+
+      @each $name, $width in $grid-breakpoints {
+        @if ($extend-breakpoint) {
+          .container#{breakpoint-infix($name, $grid-breakpoints)} {
+            @extend %responsive-container-#{$breakpoint};
+          }
+
+          // Once the current breakpoint is reached, stop extending
+          @if ($breakpoint == $name) {
+            $extend-breakpoint: false;
+          }
+        }
+      }
+    }
+  }
+}

scss/_grid.scss

@@ -1,50 +1,3 @@
-// Container widths
-//
-// Set the container width, and override it for fixed navbars in media queries.
-
-@if $enable-grid-classes {
-  // Single container class with breakpoint max-widths
-  .container {
-    @include make-container();
-    @include make-container-max-widths();
-  }
-
-  // 100% wide container at all breakpoints
-  .container-fluid {
-    @include make-container();
-  }
-
-  // Responsive containers that are 100% wide until a breakpoint
-  @each $breakpoint, $container-max-width in $container-max-widths {
-    .container-#{$breakpoint} {
-      @extend .container-fluid;
-    }
-
-    @include media-breakpoint-up($breakpoint, $grid-breakpoints) {
-      %responsive-container-#{$breakpoint} {
-        max-width: $container-max-width;
-      }
-
-      // Extend each breakpoint which is smaller or equal to the current breakpoint
-      $extend-breakpoint: true;
-
-      @each $name, $width in $grid-breakpoints {
-        @if ($extend-breakpoint) {
-          .container#{breakpoint-infix($name, $grid-breakpoints)} {
-            @extend %responsive-container-#{$breakpoint};
-          }
-
-          // Once the current breakpoint is reached, stop extending
-          @if ($breakpoint == $name) {
-            $extend-breakpoint: false;
-          }
-        }
-      }
-    }
-  }
-}
-
-
 // Row
 //
 // Rows contain your columns.

scss/_mixins.scss

@@ -38,5 +38,5 @@
 
 // Layout
 @import "mixins/clearfix";
-@import "mixins/grid-framework";
+@import "mixins/container";
 @import "mixins/grid";

scss/bootstrap-grid.scss

@@ -19,10 +19,11 @@ html {
 @import "variables";
 
 @import "mixins/breakpoints";
-@import "mixins/grid-framework";
+@import "mixins/container";
 @import "mixins/grid";
 @import "mixins/utilities";
 
+@import "containers";
 @import "grid";
 
 @import "utilities";

scss/bootstrap.scss

@@ -19,6 +19,7 @@
 @import "reboot";
 @import "type";
 @import "images";
+@import "containers";
 @import "grid";
 @import "tables";
 @import "forms";

scss/mixins/_container.scss

@@ -0,0 +1,19 @@
+// Container mixins
+
+@mixin make-container($padding-x: $container-padding-x) {
+  width: 100%;
+  padding-right: $padding-x;
+  padding-left: $padding-x;
+  margin-right: auto;
+  margin-left: auto;
+}
+
+
+// For each breakpoint, define the maximum width of the container in a media query
+@mixin make-container-max-widths($max-widths: $container-max-widths, $breakpoints: $grid-breakpoints) {
+  @each $breakpoint, $container-max-width in $max-widths {
+    @include media-breakpoint-up($breakpoint, $breakpoints) {
+      max-width: $container-max-width;
+    }
+  }
+}

scss/mixins/_grid.scss

@@ -2,24 +2,6 @@
 //
 // Generate semantic grid columns with these mixins.
 
-@mixin make-container($padding-x: $container-padding-x) {
-  width: 100%;
-  padding-right: $padding-x;
-  padding-left: $padding-x;
-  margin-right: auto;
-  margin-left: auto;
-}
-
-
-// For each breakpoint, define the maximum width of the container in a media query
-@mixin make-container-max-widths($max-widths: $container-max-widths, $breakpoints: $grid-breakpoints) {
-  @each $breakpoint, $container-max-width in $max-widths {
-    @include media-breakpoint-up($breakpoint, $breakpoints) {
-      max-width: $container-max-width;
-    }
-  }
-}
-
 @mixin make-row($gutter: $grid-gutter-width) {
   display: flex;
   flex-wrap: wrap;
@@ -67,3 +49,68 @@
     max-width: 100% / $count;
   }
 }
+
+// Framework grid generation
+//
+// Used only by Bootstrap to generate the correct number of grid classes given
+// any value of `$grid-columns`.
+
+@mixin make-grid-columns($columns: $grid-columns, $gutter: $grid-gutter-width, $breakpoints: $grid-breakpoints) {
+  // Common properties for all breakpoints
+  %grid-column {
+    position: relative;
+    width: 100%;
+    padding-right: $gutter / 2;
+    padding-left: $gutter / 2;
+  }
+
+  @each $breakpoint in map-keys($breakpoints) {
+    $infix: breakpoint-infix($breakpoint, $breakpoints);
+
+    // Allow columns to stretch full width below their breakpoints
+    @for $i from 1 through $columns {
+      .col#{$infix}-#{$i} {
+        @extend %grid-column;
+      }
+    }
+    .col#{$infix},
+    .col#{$infix}-auto {
+      @extend %grid-column;
+    }
+
+    @include media-breakpoint-up($breakpoint, $breakpoints) {
+      // Provide basic `.col-{bp}` classes for equal-width flexbox columns
+      .col#{$infix} {
+        flex-basis: 0;
+        flex-grow: 1;
+        min-width: 0; // See https://github.com/twbs/bootstrap/issues/25410
+        max-width: 100%;
+      }
+
+      @for $i from 1 through $grid-row-columns {
+        .row-cols#{$infix}-#{$i} {
+          @include row-cols($i);
+        }
+      }
+
+      .col#{$infix}-auto {
+        @include make-col-auto();
+      }
+
+      @for $i from 1 through $columns {
+        .col#{$infix}-#{$i} {
+          @include make-col($i, $columns);
+        }
+      }
+
+      // `$columns - 1` because offsetting by the width of an entire row isn't possible
+      @for $i from 0 through ($columns - 1) {
+        @if not ($infix == "" and $i == 0) { // Avoid emitting useless .offset-0
+          .offset#{$infix}-#{$i} {
+            @include make-col-offset($i, $columns);
+          }
+        }
+      }
+    }
+  }
+}

site/content/docs/4.3/getting-started/theming.md

@@ -267,7 +267,7 @@ You can find and customize these variables for key global options in Bootstrap's
 | `$enable-gradients`                          | `true` or `false` (default)        | Enables predefined gradients via `background-image` styles on various components. |
 | `$enable-transitions`                        | `true` (default) or `false`        | Enables predefined `transition`s on various components. |
 | `$enable-prefers-reduced-motion-media-query` | `true` (default) or `false`        | Enables the [`prefers-reduced-motion` media query]({{< docsref "/getting-started/accessibility#reduced-motion" >}}), which suppresses certain animations/transitions based on the users' browser/operating system preferences. |
-| `$enable-grid-classes`                       | `true` (default) or `false`        | Enables the generation of CSS classes for the grid system (e.g., `.container`, `.row`, `.col-md-1`, etc.). |
+| `$enable-grid-classes`                       | `true` (default) or `false`        | Enables the generation of CSS classes for the grid system (e.g. `.row`, `.col-md-1`, etc.). |
 | `$enable-caret`                              | `true` (default) or `false`        | Enables pseudo element caret on `.dropdown-toggle`. |
 | `$enable-pointer-cursor-for-buttons`         | `true` (default) or `false`        | Add "hand" cursor to non-disabled button elements. |
 | `$enable-rfs`                                | `true` (default)  or `false`       | Globally enables [RFS]({{< docsref "/getting-started/rfs" >}}). |

site/content/docs/4.3/migration.md

@@ -37,6 +37,7 @@ Changes to our source Sass files and compiled CSS.
 - Removed print styles and `$enable-print-styles` variable. Print display classes, however, have remained intact. [See #28339](https://github.com/twbs/bootstrap/pull/28339).
 - Dropped `color()`, `theme-color()` & `gray()` functions in favor of variables. [See #29083](https://github.com/twbs/bootstrap/pull/29083)
 - The `theme-color-level()` function is renamed to `color-level()` and now accepts any color you want instead of only `$theme-color` colors. [See #29083](https://github.com/twbs/bootstrap/pull/29083)
+- `$enable-grid-classes` doesn't disable the generation of container classes anymore [See #29146](https://github.com/twbs/bootstrap/pull/29146)
 - Line heights are dropped from several components to simplify our codebase. The `button-size()` and `pagination-size()` do not accept line height parameters anymore. [See #29271](https://github.com/twbs/bootstrap/pull/29271)
 - The `button-variant()` mixin now accepts 3 optional color parameters, for each button state, to override the color provided by `color-yiq()`. By default, these parameters will find which color provides more contrast against the button state's background color with `color-yiq()`.
 - The `button-outline-variant()` mixin now accepts an additional argument, `$active-color`, for setting the button's active state text color. By default, this parameter will find which color provides more contrast against the button's active background color with `color-yiq()`.