diff --git a/sass/form/tools.scss b/sass/form/tools.scss
index 741a5c7c1e..05ee805f18 100644
--- a/sass/form/tools.scss
+++ b/sass/form/tools.scss
@@ -84,11 +84,11 @@ $field-block-spacing: 0.75rem !default;
     justify-content: flex-start;
 
     .#{iv.$class-prefix}control {
-      &:not(:last-child) {
+      &:not(:last-of-type) {
         margin-inline-end: -1px;
       }
 
-      &:not(:first-child):not(:last-child) {
+      &:not(:first-of-type):not(:last-of-type) {
         .#{iv.$class-prefix}button,
         .#{iv.$class-prefix}input,
         .#{iv.$class-prefix}select select {
@@ -96,7 +96,7 @@ $field-block-spacing: 0.75rem !default;
         }
       }
 
-      &:first-child:not(:only-child) {
+      &:first-of-type:not(:only-of-type) {
         .#{iv.$class-prefix}button,
         .#{iv.$class-prefix}input,
         .#{iv.$class-prefix}select select {
@@ -105,7 +105,7 @@ $field-block-spacing: 0.75rem !default;
         }
       }
 
-      &:last-child:not(:only-child) {
+      &:last-of-type:not(:only-of-type) {
         .#{iv.$class-prefix}button,
         .#{iv.$class-prefix}input,
         .#{iv.$class-prefix}select select {