_modal.scss in bootstrap-5.0.0.alpha1

- old
+ new

@@ -54,55 +54,25 @@
     transform: $modal-scale-transform;
   }
 }
 
 .modal-dialog-scrollable {
-  display: flex; // IE10/11
   max-height: subtract(100%, $modal-dialog-margin * 2);
 
   .modal-content {
-    max-height: subtract(100vh, $modal-dialog-margin * 2); // IE10/11
     overflow: hidden;
   }
 
-  .modal-header,
-  .modal-footer {
-    flex-shrink: 0;
-  }
-
   .modal-body {
     overflow-y: auto;
   }
 }
 
 .modal-dialog-centered {
   display: flex;
   align-items: center;
   min-height: subtract(100%, $modal-dialog-margin * 2);
-
-  // Ensure `modal-dialog-centered` extends the full height of the view (IE10/11)
-  &::before {
-    display: block; // IE10
-    height: subtract(100vh, $modal-dialog-margin * 2);
-    height: min-content; // Reset height to 0 except on IE
-    content: "";
-  }
-
-  // Ensure `.modal-body` shows scrollbar (IE10/11)
-  &.modal-dialog-scrollable {
-    flex-direction: column;
-    justify-content: center;
-    height: 100%;
-
-    .modal-content {
-      max-height: none;
-    }
-
-    &::before {
-      content: none;
-    }
-  }
 }
 
 // Actual modal
 .modal-content {
   position: relative;
@@ -138,10 +108,11 @@
 
 // Modal header
 // Top section of the modal w/ title and dismiss
 .modal-header {
   display: flex;
+  flex-shrink: 0;
   align-items: flex-start; // so the close btn always stays on the upper right corner
   justify-content: space-between; // Put modal header elements (title and dismiss) on opposite ends
   padding: $modal-header-padding;
   border-bottom: $modal-header-border-width solid $modal-header-border-color;
   @include border-top-radius($modal-content-inner-border-radius);
@@ -171,21 +142,22 @@
 
 // Footer (for actions)
 .modal-footer {
   display: flex;
   flex-wrap: wrap;
+  flex-shrink: 0;
   align-items: center; // vertically center
   justify-content: flex-end; // Right align buttons with flex property because text-align doesn't work on flex items
-  padding: $modal-inner-padding - $modal-footer-margin-between * .5;
+  padding: $modal-inner-padding - $modal-footer-margin-between / 2;
   border-top: $modal-footer-border-width solid $modal-footer-border-color;
   @include border-bottom-radius($modal-content-inner-border-radius);
 
   // Place margin between footer elements
   // This solution is far from ideal because of the universal selector usage,
   // but is needed to fix https://github.com/twbs/bootstrap/issues/24800
   > * {
-    margin: $modal-footer-margin-between * .5;
+    margin: $modal-footer-margin-between / 2;
   }
 }
 
 // Measure scrollbar width for padding body during modal show/hide
 .modal-scrollbar-measure {
@@ -204,23 +176,14 @@
     margin: $modal-dialog-margin-y-sm-up auto;
   }
 
   .modal-dialog-scrollable {
     max-height: subtract(100%, $modal-dialog-margin-y-sm-up * 2);
-
-    .modal-content {
-      max-height: subtract(100vh, $modal-dialog-margin-y-sm-up * 2);
-    }
   }
 
   .modal-dialog-centered {
     min-height: subtract(100%, $modal-dialog-margin-y-sm-up * 2);
-
-    &::before {
-      height: subtract(100vh, $modal-dialog-margin-y-sm-up * 2);
-      height: min-content;
-    }
   }
 
   .modal-content {
     @include box-shadow($modal-content-box-shadow-sm-up);
   }
@@ -235,6 +198,38 @@
   }
 }
 
 @include media-breakpoint-up(xl) {
   .modal-xl { max-width: $modal-xl; }
+}
+
+@each $breakpoint in map-keys($grid-breakpoints) {
+  $infix: breakpoint-infix($breakpoint, $grid-breakpoints);
+  $postfix: if($infix != "", $infix + "-down", "");
+
+  @include media-breakpoint-down($breakpoint) {
+    .modal-fullscreen#{$postfix} {
+      width: 100vw;
+      max-width: none;
+      height: 100%;
+      margin: 0;
+
+      .modal-content {
+        height: 100%;
+        border: 0;
+        @include border-radius(0);
+      }
+
+      .modal-header {
+        @include border-radius(0);
+      }
+
+      .modal-body {
+        overflow-y: auto;
+      }
+
+      .modal-footer {
+        @include border-radius(0);
+      }
+    }
+  }
 }