update to bootstrap 4.3.1

assets/scss/bootstrap/mixins/_badge.scss

@@ -2,11 +2,16 @@
   color: color-yiq($bg);
   background-color: $bg;
 
-  &[href] {
+  @at-root a#{&} {
     @include hover-focus {
       color: color-yiq($bg);
-      text-decoration: none;
       background-color: darken($bg, 10%);
     }
+
+    &:focus,
+    &.focus {
+      outline: 0;
+      box-shadow: 0 0 0 $badge-focus-width rgba($bg, .5);
+    }
   }
 }

assets/scss/bootstrap/mixins/_border-radius.scss

@@ -1,9 +1,13 @@
+// stylelint-disable property-blacklist
 // Single side border-radius
 
-@mixin border-radius($radius: $border-radius) {
+@mixin border-radius($radius: $border-radius, $fallback-border-radius: false) {
   @if $enable-rounded {
     border-radius: $radius;
   }
+  @else if $fallback-border-radius != false {
+    border-radius: $fallback-border-radius;
+  }
 }
 
 @mixin border-top-radius($radius) {
@@ -33,3 +37,27 @@
     border-bottom-left-radius: $radius;
   }
 }
+
+@mixin border-top-left-radius($radius) {
+  @if $enable-rounded {
+    border-top-left-radius: $radius;
+  }
+}
+
+@mixin border-top-right-radius($radius) {
+  @if $enable-rounded {
+    border-top-right-radius: $radius;
+  }
+}
+
+@mixin border-bottom-right-radius($radius) {
+  @if $enable-rounded {
+    border-bottom-right-radius: $radius;
+  }
+}
+
+@mixin border-bottom-left-radius($radius) {
+  @if $enable-rounded {
+    border-bottom-left-radius: $radius;
+  }
+}

assets/scss/bootstrap/mixins/_box-shadow.scss

@@ -1,5 +1,20 @@
 @mixin box-shadow($shadow...) {
   @if $enable-shadows {
-    box-shadow: $shadow;
+    $result: ();
+
+    @if (length($shadow) == 1) {
+      // We can pass `@include box-shadow(none);`
+      $result: $shadow;
+    } @else {
+      // Filter to avoid invalid properties for example `box-shadow: none, 1px 1px black;`
+      @for $i from 1 through length($shadow) {
+        @if nth($shadow, $i) != "none" {
+          $result: append($result, nth($shadow, $i), "comma");
+        }
+      }
+    }
+    @if (length($result) > 0) {
+      box-shadow: $result;
+    }
   }
 }

assets/scss/bootstrap/mixins/_breakpoints.scss

@@ -16,7 +16,7 @@
 //    md
 @function breakpoint-next($name, $breakpoints: $grid-breakpoints, $breakpoint-names: map-keys($breakpoints)) {
   $n: index($breakpoint-names, $name);
-  @return if($n < length($breakpoint-names), nth($breakpoint-names, $n + 1), null);
+  @return if($n != null and $n < length($breakpoint-names), nth($breakpoint-names, $n + 1), null);
 }
 
 // Minimum breakpoint width. Null for the smallest (first) breakpoint.
@@ -39,10 +39,10 @@
 //    767.98px
 @function breakpoint-max($name, $breakpoints: $grid-breakpoints) {
   $next: breakpoint-next($name, $breakpoints);
-  @return if($next, breakpoint-min($next, $breakpoints) - .02px, null);
+  @return if($next, breakpoint-min($next, $breakpoints) - .02, null);
 }
 
-// Returns a blank string if smallest breakpoint, otherwise returns the name with a dash infront.
+// Returns a blank string if smallest breakpoint, otherwise returns the name with a dash in front.
 // Useful for making responsive utilities.
 //
 //    >> breakpoint-infix(xs, (xs: 0, sm: 576px, md: 768px, lg: 992px, xl: 1200px))

assets/scss/bootstrap/mixins/_buttons.scss

@@ -19,9 +19,9 @@
   &.focus {
     // Avoid using mixin so we can pass custom focus shadow properly
     @if $enable-shadows {
-      box-shadow: $btn-box-shadow, 0 0 0 $btn-focus-width rgba($border, .5);
+      box-shadow: $btn-box-shadow, 0 0 0 $btn-focus-width rgba(mix(color-yiq($background), $border, 15%), .5);
     } @else {
-      box-shadow: 0 0 0 $btn-focus-width rgba($border, .5);
+      box-shadow: 0 0 0 $btn-focus-width rgba(mix(color-yiq($background), $border, 15%), .5);
     }
   }
 
@@ -31,6 +31,10 @@
     color: color-yiq($background);
     background-color: $background;
     border-color: $border;
+    // Remove CSS gradients if they're enabled
+    @if $enable-gradients {
+      background-image: none;
+    }
   }
 
   &:not(:disabled):not(.disabled):active,
@@ -45,10 +49,10 @@
 
     &:focus {
       // Avoid using mixin so we can pass custom focus shadow properly
-      @if $enable-shadows {
-        box-shadow: $btn-active-box-shadow, 0 0 0 $btn-focus-width rgba($border, .5);
+      @if $enable-shadows and $btn-active-box-shadow != none {
+        box-shadow: $btn-active-box-shadow, 0 0 0 $btn-focus-width rgba(mix(color-yiq($background), $border, 15%), .5);
       } @else {
-        box-shadow: 0 0 0 $btn-focus-width rgba($border, .5);
+        box-shadow: 0 0 0 $btn-focus-width rgba(mix(color-yiq($background), $border, 15%), .5);
       }
     }
   }
@@ -56,11 +60,9 @@
 
 @mixin button-outline-variant($color, $color-hover: color-yiq($color), $active-background: $color, $active-border: $color) {
   color: $color;
-  background-color: transparent;
-  background-image: none;
   border-color: $color;
 
-  &:hover {
+  @include hover {
     color: $color-hover;
     background-color: $active-background;
     border-color: $active-border;
@@ -98,12 +100,8 @@
 // Button sizes
 @mixin button-size($padding-y, $padding-x, $font-size, $line-height, $border-radius) {
   padding: $padding-y $padding-x;
-  font-size: $font-size;
+  @include font-size($font-size);
   line-height: $line-height;
   // Manually declare to provide an override to the browser default
-  @if $enable-rounded {
-    border-radius: $border-radius;
-  } @else {
-    border-radius: 0;
-  }
+  @include border-radius($border-radius, 0);
 }

assets/scss/bootstrap/mixins/_caret.scss

@@ -14,6 +14,7 @@
 
 @mixin caret-right {
   border-top: $caret-width solid transparent;
+  border-right: 0;
   border-bottom: $caret-width solid transparent;
   border-left: $caret-width solid;
 }
@@ -28,10 +29,8 @@
   @if $enable-caret {
     &::after {
       display: inline-block;
-      width: 0;
-      height: 0;
-      margin-left: $caret-width * .85;
-      vertical-align: $caret-width * .85;
+      margin-left: $caret-spacing;
+      vertical-align: $caret-vertical-align;
       content: "";
       @if $direction == down {
         @include caret-down;
@@ -49,10 +48,8 @@
 
       &::before {
         display: inline-block;
-        width: 0;
-        height: 0;
-        margin-right: $caret-width * .85;
-        vertical-align: $caret-width * .85;
+        margin-right: $caret-spacing;
+        vertical-align: $caret-vertical-align;
         content: "";
         @include caret-left;
       }

assets/scss/bootstrap/mixins/_deprecate.scss

@@ -0,0 +1,10 @@
+// Deprecate mixin
+//
+// This mixin can be used to deprecate mixins or functions.
+// `$enable-deprecation-messages` is a global variable, `$ignore-warning` is a variable that can be passed to
+// some deprecated mixins to suppress the warning (for example if the mixin is still be used in the current version of Bootstrap)
+@mixin deprecate($name, $deprecate-version, $remove-version, $ignore-warning: false) {
+  @if ($enable-deprecation-messages != false and $ignore-warning != true) {
+    @warn "#{$name} has been deprecated as of #{$deprecate-version}. It will be removed entirely in #{$remove-version}.";
+  }
+}

assets/scss/bootstrap/mixins/_float.scss

@@ -2,10 +2,13 @@
 
 @mixin float-left {
   float: left !important;
+  @include deprecate("The `float-left` mixin", "v4.3.0", "v5");
 }
 @mixin float-right {
   float: right !important;
+  @include deprecate("The `float-right` mixin", "v4.3.0", "v5");
 }
 @mixin float-none {
   float: none !important;
+  @include deprecate("The `float-none` mixin", "v4.3.0", "v5");
 }

assets/scss/bootstrap/mixins/_forms.scss

@@ -26,12 +26,12 @@
 }
 
 
-@mixin form-validation-state($state, $color) {
+@mixin form-validation-state($state, $color, $icon) {
   .#{$state}-feedback {
     display: none;
     width: 100%;
     margin-top: $form-feedback-margin-top;
-    font-size: $form-feedback-font-size;
+    @include font-size($form-feedback-font-size);
     color: $color;
   }
 
@@ -41,21 +41,28 @@
     z-index: 5;
     display: none;
     max-width: 100%; // Contain to parent when possible
-    padding: .5rem;
+    padding: $form-feedback-tooltip-padding-y $form-feedback-tooltip-padding-x;
     margin-top: .1rem;
-    font-size: .875rem;
-    line-height: 1;
-    color: #fff;
-    background-color: rgba($color, .8);
-    border-radius: .2rem;
+    @include font-size($form-feedback-tooltip-font-size);
+    line-height: $form-feedback-tooltip-line-height;
+    color: color-yiq($color);
+    background-color: rgba($color, $form-feedback-tooltip-opacity);
+    @include border-radius($form-feedback-tooltip-border-radius);
   }
 
-  .form-control,
-  .custom-select {
+  .form-control {
     .was-validated &:#{$state},
     &.is-#{$state} {
       border-color: $color;
 
+      @if $enable-validation-icons {
+        padding-right: $input-height-inner;
+        background-image: $icon;
+        background-repeat: no-repeat;
+        background-position: center right $input-height-inner-quarter;
+        background-size: $input-height-inner-half $input-height-inner-half;
+      }
+
       &:focus {
         border-color: $color;
         box-shadow: 0 0 0 $input-focus-width rgba($color, .25);
@@ -68,6 +75,50 @@
     }
   }
 
+  // stylelint-disable-next-line selector-no-qualifying-type
+  textarea.form-control {
+    .was-validated &:#{$state},
+    &.is-#{$state} {
+      @if $enable-validation-icons {
+        padding-right: $input-height-inner;
+        background-position: top $input-height-inner-quarter right $input-height-inner-quarter;
+      }
+    }
+  }
+
+  .custom-select {
+    .was-validated &:#{$state},
+    &.is-#{$state} {
+      border-color: $color;
+
+      @if $enable-validation-icons {
+        padding-right: $custom-select-feedback-icon-padding-right;
+        background: $custom-select-background, $icon $custom-select-bg no-repeat $custom-select-feedback-icon-position / $custom-select-feedback-icon-size;
+      }
+
+      &:focus {
+        border-color: $color;
+        box-shadow: 0 0 0 $input-focus-width rgba($color, .25);
+      }
+
+      ~ .#{$state}-feedback,
+      ~ .#{$state}-tooltip {
+        display: block;
+      }
+    }
+  }
+
+
+  .form-control-file {
+    .was-validated &:#{$state},
+    &.is-#{$state} {
+      ~ .#{$state}-feedback,
+      ~ .#{$state}-tooltip {
+        display: block;
+      }
+    }
+  }
+
   .form-check-input {
     .was-validated &:#{$state},
     &.is-#{$state} {
@@ -89,7 +140,7 @@
         color: $color;
 
         &::before {
-          background-color: lighten($color, 25%);
+          border-color: $color;
         }
       }
 
@@ -100,13 +151,18 @@
 
       &:checked {
         ~ .custom-control-label::before {
+          border-color: lighten($color, 10%);
           @include gradient-bg(lighten($color, 10%));
         }
       }
 
       &:focus {
         ~ .custom-control-label::before {
-          box-shadow: 0 0 0 1px $body-bg, 0 0 0 $input-focus-width rgba($color, .25);
+          box-shadow: 0 0 0 $input-focus-width rgba($color, .25);
+        }
+
+        &:not(:checked) ~ .custom-control-label::before {
+          border-color: $color;
         }
       }
     }
@@ -118,8 +174,6 @@
     &.is-#{$state} {
       ~ .custom-file-label {
         border-color: $color;
-
-        &::before { border-color: inherit; }
       }
 
       ~ .#{$state}-feedback,
@@ -129,6 +183,7 @@
 
       &:focus {
         ~ .custom-file-label {
+          border-color: $color;
           box-shadow: 0 0 0 $input-focus-width rgba($color, .25);
         }
       }

assets/scss/bootstrap/mixins/_gradients.scss

@@ -11,7 +11,7 @@
 // Horizontal gradient, from left to right
 //
 // Creates two color stops, start and end, by specifying a color and position for each color stop.
-@mixin gradient-x($start-color: #555, $end-color: #333, $start-percent: 0%, $end-percent: 100%) {
+@mixin gradient-x($start-color: $gray-700, $end-color: $gray-800, $start-percent: 0%, $end-percent: 100%) {
   background-image: linear-gradient(to right, $start-color $start-percent, $end-color $end-percent);
   background-repeat: repeat-x;
 }
@@ -19,27 +19,27 @@
 // Vertical gradient, from top to bottom
 //
 // Creates two color stops, start and end, by specifying a color and position for each color stop.
-@mixin gradient-y($start-color: #555, $end-color: #333, $start-percent: 0%, $end-percent: 100%) {
+@mixin gradient-y($start-color: $gray-700, $end-color: $gray-800, $start-percent: 0%, $end-percent: 100%) {
   background-image: linear-gradient(to bottom, $start-color $start-percent, $end-color $end-percent);
   background-repeat: repeat-x;
 }
 
-@mixin gradient-directional($start-color: #555, $end-color: #333, $deg: 45deg) {
+@mixin gradient-directional($start-color: $gray-700, $end-color: $gray-800, $deg: 45deg) {
   background-image: linear-gradient($deg, $start-color, $end-color);
   background-repeat: repeat-x;
 }
-@mixin gradient-x-three-colors($start-color: #00b3ee, $mid-color: #7a43b6, $color-stop: 50%, $end-color: #c3325f) {
+@mixin gradient-x-three-colors($start-color: $blue, $mid-color: $purple, $color-stop: 50%, $end-color: $red) {
   background-image: linear-gradient(to right, $start-color, $mid-color $color-stop, $end-color);
   background-repeat: no-repeat;
 }
-@mixin gradient-y-three-colors($start-color: #00b3ee, $mid-color: #7a43b6, $color-stop: 50%, $end-color: #c3325f) {
+@mixin gradient-y-three-colors($start-color: $blue, $mid-color: $purple, $color-stop: 50%, $end-color: $red) {
   background-image: linear-gradient($start-color, $mid-color $color-stop, $end-color);
   background-repeat: no-repeat;
 }
-@mixin gradient-radial($inner-color: #555, $outer-color: #333) {
+@mixin gradient-radial($inner-color: $gray-700, $outer-color: $gray-800) {
   background-image: radial-gradient(circle, $inner-color, $outer-color);
   background-repeat: no-repeat;
 }
-@mixin gradient-striped($color: rgba(255,255,255,.15), $angle: 45deg) {
+@mixin gradient-striped($color: rgba($white, .15), $angle: 45deg) {
   background-image: linear-gradient($angle, $color 25%, transparent 25%, transparent 50%, $color 50%, $color 75%, transparent 75%, transparent);
 }

assets/scss/bootstrap/mixins/_grid-framework.scss

@@ -8,9 +8,8 @@
   %grid-column {
     position: relative;
     width: 100%;
-    min-height: 1px; // Prevent columns from collapsing when empty
-    padding-right: ($gutter / 2);
-    padding-left: ($gutter / 2);
+    padding-right: $gutter / 2;
+    padding-left: $gutter / 2;
   }
 
   @each $breakpoint in map-keys($breakpoints) {
@@ -37,7 +36,7 @@
       .col#{$infix}-auto {
         flex: 0 0 auto;
         width: auto;
-        max-width: none; // Reset earlier grid tiers
+        max-width: 100%; // Reset earlier grid tiers
       }
 
       @for $i from 1 through $columns {

assets/scss/bootstrap/mixins/_grid.scss

@@ -2,10 +2,10 @@
 //
 // Generate semantic grid columns with these mixins.
 
-@mixin make-container() {
+@mixin make-container($gutter: $grid-gutter-width) {
   width: 100%;
-  padding-right: ($grid-gutter-width / 2);
-  padding-left: ($grid-gutter-width / 2);
+  padding-right: $gutter / 2;
+  padding-left: $gutter / 2;
   margin-right: auto;
   margin-left: auto;
 }
@@ -20,22 +20,21 @@
   }
 }
 
-@mixin make-row() {
+@mixin make-row($gutter: $grid-gutter-width) {
   display: flex;
   flex-wrap: wrap;
-  margin-right: ($grid-gutter-width / -2);
-  margin-left: ($grid-gutter-width / -2);
+  margin-right: -$gutter / 2;
+  margin-left: -$gutter / 2;
 }
 
-@mixin make-col-ready() {
+@mixin make-col-ready($gutter: $grid-gutter-width) {
   position: relative;
   // Prevent columns from becoming too narrow when at smaller grid tiers by
   // always setting `width: 100%;`. This works because we use `flex` values
   // later on to override this initial width.
   width: 100%;
-  min-height: 1px; // Prevent collapsing
-  padding-right: ($grid-gutter-width / 2);
-  padding-left: ($grid-gutter-width / 2);
+  padding-right: $gutter / 2;
+  padding-left: $gutter / 2;
 }
 
 @mixin make-col($size, $columns: $grid-columns) {

assets/scss/bootstrap/mixins/_hover.scss

@@ -1,13 +1,11 @@
-// stylelint-disable indentation
-
 // Hover mixin and `$enable-hover-media-query` are deprecated.
 //
-// Origally added during our alphas and maintained during betas, this mixin was
-// designed to prevent `:hover` stickiness on iOS—an issue where hover styles
+// Originally added during our alphas and maintained during betas, this mixin was
+// designed to prevent `:hover` stickiness on iOS-an issue where hover styles
 // would persist after initial touch.
 //
 // For backward compatibility, we've kept these mixins and updated them to
-// always return their regular psuedo-classes instead of a shimmed media query.
+// always return their regular pseudo-classes instead of a shimmed media query.
 //
 // Issue: https://github.com/twbs/bootstrap/issues/25195
 

assets/scss/bootstrap/mixins/_image.scss

@@ -20,7 +20,6 @@
 //
 // Short retina mixin for setting background-image and -size.
 
-// stylelint-disable indentation, media-query-list-comma-newline-after
 @mixin img-retina($file-1x, $file-2x, $width-1x, $height-1x) {
   background-image: url($file-1x);
 
@@ -29,8 +28,9 @@
   // There's no such thing as unprefixed min-device-pixel-ratio since it's nonstandard.
   // Compatibility info: https://caniuse.com/#feat=css-media-resolution
   @media only screen and (min-resolution: 192dpi), // IE9-11 don't support dppx
-  only screen and (min-resolution: 2dppx) { // Standardized
+    only screen and (min-resolution: 2dppx) { // Standardized
     background-image: url($file-2x);
     background-size: $width-1x $height-1x;
   }
+  @include deprecate("`img-retina()`", "v4.3.0", "v5");
 }

assets/scss/bootstrap/mixins/_list-group.scss

@@ -12,7 +12,7 @@
       }
 
       &.active {
-        color: #fff;
+        color: $white;
         background-color: $color;
         border-color: $color;
       }

assets/scss/bootstrap/mixins/_nav-divider.scss

@@ -2,9 +2,9 @@
 //
 // Dividers (basically an hr) within dropdowns and nav lists
 
-@mixin nav-divider($color: #e5e5e5) {
+@mixin nav-divider($color: $nav-divider-color, $margin-y: $nav-divider-margin-y) {
   height: 0;
-  margin: ($spacer / 2) 0;
+  margin: $margin-y 0;
   overflow: hidden;
   border-top: 1px solid $color;
 }

assets/scss/bootstrap/mixins/_navbar-align.scss

@@ -1,10 +0,0 @@
-// Navbar vertical align
-//
-// Vertically center elements in the navbar.
-// Example: an element has a height of 30px, so write out `.navbar-vertical-align(30px);`
-// to calculate the appropriate top margin.
-
-// @mixin navbar-vertical-align($element-height) {
-//   margin-top: (($navbar-height - $element-height) / 2);
-//   margin-bottom: (($navbar-height - $element-height) / 2);
-// }

assets/scss/bootstrap/mixins/_pagination.scss

@@ -3,7 +3,7 @@
 @mixin pagination-size($padding-y, $padding-x, $font-size, $line-height, $border-radius) {
   .page-link {
     padding: $padding-y $padding-x;
-    font-size: $font-size;
+    @include font-size($font-size);
     line-height: $line-height;
   }
 

assets/scss/bootstrap/mixins/_reset-text.scss

@@ -2,10 +2,10 @@
   font-family: $font-family-base;
   // We deliberately do NOT reset font-size or word-wrap.
   font-style: normal;
-  font-weight: 400;
+  font-weight: $font-weight-normal;
   line-height: $line-height-base;
   text-align: left; // Fallback for where `start` is not supported
-  text-align: start; // stylelint-disable-line declaration-block-no-duplicate-properties
+  text-align: start;
   text-decoration: none;
   text-shadow: none;
   text-transform: none;

assets/scss/bootstrap/mixins/_screen-reader.scss

@@ -1,6 +1,6 @@
 // Only display content to screen readers
 //
-// See: http://a11yproject.com/posts/how-to-hide-content/
+// See: https://a11yproject.com/posts/how-to-hide-content/
 // See: https://hugogiraudel.com/2016/10/13/css-hide-and-seek/
 
 @mixin sr-only {
@@ -11,7 +11,6 @@
   overflow: hidden;
   clip: rect(0, 0, 0, 0);
   white-space: nowrap;
-  clip-path: inset(50%);
   border: 0;
 }
 
@@ -30,6 +29,5 @@
     overflow: visible;
     clip: auto;
     white-space: normal;
-    clip-path: none;
   }
 }

assets/scss/bootstrap/mixins/_size.scss

@@ -3,4 +3,5 @@
 @mixin size($width, $height: $width) {
   width: $width;
   height: $height;
+  @include deprecate("`size()`", "v4.3.0", "v5");
 }

assets/scss/bootstrap/mixins/_table-row.scss

@@ -1,6 +1,6 @@
 // Tables
 
-@mixin table-row-variant($state, $background) {
+@mixin table-row-variant($state, $background, $border: null) {
   // Exact selectors below required to override `.table-striped` and prevent
   // inheritance to nested tables.
   .table-#{$state} {
@@ -9,6 +9,15 @@
     > td {
       background-color: $background;
     }
+
+    @if $border != null {
+      th,
+      td,
+      thead th,
+      tbody + tbody {
+        border-color: $border;
+      }
+    }
   }
 
   // Hover states for `.table-hover`

assets/scss/bootstrap/mixins/_text-emphasis.scss

@@ -6,9 +6,11 @@
   #{$parent} {
     color: $color !important;
   }
-  a#{$parent} {
-    @include hover-focus {
-      color: darken($color, 10%) !important;
+  @if $emphasized-link-hover-darken-percentage != 0 {
+    a#{$parent} {
+      @include hover-focus {
+        color: darken($color, $emphasized-link-hover-darken-percentage) !important;
+      }
     }
   }
 }

assets/scss/bootstrap/mixins/_text-hide.scss

@@ -1,9 +1,11 @@
 // CSS image replacement
-@mixin text-hide() {
+@mixin text-hide($ignore-warning: false) {
   // stylelint-disable-next-line font-family-no-missing-generic-family-keyword
   font: 0/0 a;
   color: transparent;
   text-shadow: none;
   background-color: transparent;
   border: 0;
+
+  @include deprecate("`text-hide()`", "v4.1.0", "v5", $ignore-warning);
 }

assets/scss/bootstrap/mixins/_transition.scss

@@ -1,3 +1,4 @@
+// stylelint-disable property-blacklist
 @mixin transition($transition...) {
   @if $enable-transitions {
     @if length($transition) == 0 {
@@ -6,4 +7,10 @@
       transition: $transition;
     }
   }
+
+  @if $enable-prefers-reduced-motion-media-query {
+    @media (prefers-reduced-motion: reduce) {
+      transition: none;
+    }
+  }
 }

assets/scss/bootstrap/mixins/_visibility.scss

@@ -4,4 +4,5 @@
 
 @mixin invisible($visibility) {
   visibility: $visibility !important;
+  @include deprecate("`invisible()`", "v4.3.0", "v5");
 }