Form fields (grouped field) now use negative margins like columns, this prevents middle rows in even sized fields being slightly smaller than other rows

src/definitions/collections/form.less

@@ -18,7 +18,6 @@
 
 @import (multiple) '../../theme.config';
 
-
 /*******************************
             Elements
 *******************************/
@@ -750,7 +749,7 @@
 .ui.form .fields {
   display: flex;
   flex-direction: row;
-  margin: @fieldMargin;
+  margin: @fieldsMargin;
 }
 .ui.form .fields > .field {
   flex: 0 1 auto;
@@ -824,19 +823,10 @@
   .ui.form .ten.fields > .fields,
   .ui.form .ten.fields > .field {
     width: @oneColumn !important;
-    margin: @fieldMargin;
-    padding-left: 0%;
-    padding-right: 0%;
+    margin: @fieldsMargin;
   }
 }
 
-.ui.form .fields .field:first-child {
-  padding-left: 0%;
-}
-.ui.form .fields .field:last-child {
-  padding-right: 0%;
-}
-
 
 /* Sizing Combinations */
 .ui.form .fields .wide.field {
@@ -844,12 +834,6 @@
   padding-left: (@gutterWidth / 2);
   padding-right: (@gutterWidth / 2);
 }
-.ui.form .fields .wide.field:first-child {
-  padding-left: 0%;
-}
-.ui.form .fields .wide.field:last-child {
-  padding-right: 0%;
-}
 
 .ui.form .one.wide.field {
   width: @oneWide !important;
@@ -926,8 +910,6 @@
   .ui.form .fields > .fifteen.wide.field,
   .ui.form .fields > .sixteen.wide.field {
     width: @oneColumn !important;
-    padding-left: 0%;
-    padding-right: 0%;
   }
 }
 

src/themes/default/collections/form.variables

@@ -16,6 +16,9 @@
 /* Field */
 @fieldMargin: 0em 0em @rowDistance;
 
+/* Fields */
+@fieldsMargin: 0em -(@gutterWidth / 2) @rowDistance;
+
 /* Form Label */
 @labelDistance: @4px;
 @labelMargin: 0em 0em @labelDistance 0em;