_button-group.scss in bootstrap-4.0.0.alpha3.1

- old
+ new

@@ -1,5 +1,7 @@
+// scss-lint:disable QualifyingElement
+
 // Make the div behave like a button
 .btn-group,
 .btn-group-vertical {
   position: relative;
   display: inline-block;
@@ -31,22 +33,22 @@
   }
 }
 
 // Optional: Group multiple button groups together for a toolbar
 .btn-toolbar {
-  margin-left: -5px; // Offset the first child's margin
+  margin-left: -$btn-toolbar-margin; // Offset the first child's margin
   @include clearfix();
 
   .btn-group,
   .input-group {
     float: left;
   }
 
   > .btn,
   > .btn-group,
   > .input-group {
-    margin-left: 5px;
+    margin-left: $btn-toolbar-margin;
   }
 }
 
 .btn-group > .btn:not(:first-child):not(:last-child):not(.dropdown-toggle) {
   border-radius: 0;
@@ -100,24 +102,34 @@
 
 //
 // Split button dropdowns
 //
 
-// Give the line between buttons some depth
-.btn-group > .btn + .dropdown-toggle {
-  padding-right: 8px;
-  padding-left: 8px;
+.btn + .dropdown-toggle-split {
+  padding-right: $btn-padding-x * .75;
+  padding-left: $btn-padding-x * .75;
+
+  &::after {
+    margin-left: 0;
+  }
 }
-.btn-group > .btn-lg + .dropdown-toggle {
-  padding-right: 12px;
-  padding-left: 12px;
+
+.btn-sm + .dropdown-toggle-split {
+  padding-right: $btn-padding-x-sm * .75;
+  padding-left: $btn-padding-x-sm * .75;
 }
 
+.btn-lg + .dropdown-toggle-split {
+  padding-right: $btn-padding-x-lg * .75;
+  padding-left: $btn-padding-x-lg * .75;
+}
+
+
 // The clickable button for toggling the menu
 // Remove the gradient and set the same inset shadow as the :active state
 .btn-group.open .dropdown-toggle {
-  @include box-shadow(inset 0 3px 5px rgba(0,0,0,.125));
+  @include box-shadow($btn-active-box-shadow);
 
   // Show no shadow for `.btn-link` since it has no other button styles.
   &.btn-link {
     @include box-shadow(none);
   }
@@ -175,14 +187,12 @@
 .btn-group-vertical > .btn {
   &:not(:first-child):not(:last-child) {
     border-radius: 0;
   }
   &:first-child:not(:last-child) {
-    border-top-right-radius: $btn-border-radius;
     @include border-bottom-radius(0);
   }
   &:last-child:not(:first-child) {
-    border-bottom-left-radius: $btn-border-radius;
     @include border-top-radius(0);
   }
 }
 .btn-group-vertical > .btn-group:not(:first-child):not(:last-child) > .btn {
   border-radius: 0;