diff --git a/aio/content/examples/testing/src/app/dashboard/dashboard.component.css b/aio/content/examples/testing/src/app/dashboard/dashboard.component.css
index a10f7e0211d89b..0d4eebcdff8529 100644
--- a/aio/content/examples/testing/src/app/dashboard/dashboard.component.css
+++ b/aio/content/examples/testing/src/app/dashboard/dashboard.component.css
@@ -2,8 +2,6 @@
   float: left;
 }
 *, *::after, *::before {
-	-webkit-box-sizing: border-box;
-	-moz-box-sizing: border-box;
 	box-sizing: border-box;
 }
 h3 {
diff --git a/aio/content/examples/toh-pt5/src/app/dashboard/dashboard.component.css b/aio/content/examples/toh-pt5/src/app/dashboard/dashboard.component.css
index 7ce1157b018151..e34841c08b2485 100644
--- a/aio/content/examples/toh-pt5/src/app/dashboard/dashboard.component.css
+++ b/aio/content/examples/toh-pt5/src/app/dashboard/dashboard.component.css
@@ -11,8 +11,6 @@ a {
   text-decoration: none;
 }
 *, *::after, *::before {
-  -webkit-box-sizing: border-box;
-  -moz-box-sizing: border-box;
   box-sizing: border-box;
 }
 h3 {
diff --git a/aio/content/examples/toh-pt6/src/app/dashboard/dashboard.component.css b/aio/content/examples/toh-pt6/src/app/dashboard/dashboard.component.css
index 2f6736bc961cf3..031b2e382fb898 100644
--- a/aio/content/examples/toh-pt6/src/app/dashboard/dashboard.component.css
+++ b/aio/content/examples/toh-pt6/src/app/dashboard/dashboard.component.css
@@ -11,8 +11,6 @@ a {
   text-decoration: none;
 }
 *, *::after, *::before {
-  -webkit-box-sizing: border-box;
-  -moz-box-sizing: border-box;
   box-sizing: border-box;
 }
 h3 {
diff --git a/aio/content/examples/universal/src/app/dashboard/dashboard.component.css b/aio/content/examples/universal/src/app/dashboard/dashboard.component.css
index 2f6736bc961cf3..031b2e382fb898 100644
--- a/aio/content/examples/universal/src/app/dashboard/dashboard.component.css
+++ b/aio/content/examples/universal/src/app/dashboard/dashboard.component.css
@@ -11,8 +11,6 @@ a {
   text-decoration: none;
 }
 *, *::after, *::before {
-  -webkit-box-sizing: border-box;
-  -moz-box-sizing: border-box;
   box-sizing: border-box;
 }
 h3 {