bootstrap 4 beta 2

Bootstrap 4 beta 2

bootstap 4 alpha 6/scss/mixins/_grid.scss

@@ -0,0 +1,107 @@
+/// Grid system
+//
+// Generate semantic grid columns with these mixins.
+
+@mixin make-container($gutter: $grid-gutter-width-base) {
+  margin-left: auto;
+  margin-right: auto;
+  padding-left:  ($gutter / 2);
+  padding-right: ($gutter / 2);
+  @if not $enable-flex {
+    @include clearfix();
+  }
+}
+
+
+// For each breakpoint, define the maximum width of the container in a media query
+@mixin make-container-max-widths($max-widths: $container-max-widths, $breakpoints: $grid-breakpoints) {
+  @each $breakpoint, $container-max-width in $max-widths {
+    @include media-breakpoint-up($breakpoint, $breakpoints) {
+      width: $container-max-width;
+      max-width: 100%;
+    }
+  }
+}
+
+@mixin make-gutters($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();
+  }
+
+  @each $breakpoint in map-keys($gutters) {
+    @include media-breakpoint-up($breakpoint) {
+      $gutter: map-get($gutters, $breakpoint);
+      margin-right: ($gutter / -2);
+      margin-left:  ($gutter / -2);
+    }
+  }
+}
+
+@mixin make-col-ready($gutters: $grid-gutter-widths) {
+  position: relative;
+  min-height: 1px; // Prevent collapsing
+
+  // Prevent columns from becoming too narrow when at smaller grid tiers by
+  // always setting `width: 100%;`. This works because we use `flex` values
+  // later on to override this initial width.
+  @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) {
+  @if $enable-flex {
+    flex: 0 0 percentage($size / $columns);
+    // Add a `max-width` to ensure content within each column does not blow out
+    // the width of the column. Applies to IE10+ and Firefox. Chrome and Safari
+    // do not appear to require this.
+    max-width: percentage($size / $columns);
+  } @else {
+    float: left;
+    width: percentage($size / $columns);
+  }
+}
+
+@mixin make-col-offset($size, $columns: $grid-columns) {
+  margin-left: percentage($size / $columns);
+}
+
+@mixin make-col-push($size, $columns: $grid-columns) {
+  left: if($size > 0, percentage($size / $columns), auto);
+}
+
+@mixin make-col-pull($size, $columns: $grid-columns) {
+  right: if($size > 0, percentage($size / $columns), auto);
+}
+
+@mixin make-col-modifier($type, $size, $columns) {
+  // Work around the lack of dynamic mixin @include support (https://github.com/sass/sass/issues/626)
+  @if $type == push {
+    @include make-col-push($size, $columns);
+  } @else if $type == pull {
+    @include make-col-pull($size, $columns);
+  } @else if $type == offset {
+    @include make-col-offset($size, $columns);
+  }
+}