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 ce7eb46e35..a10f7e0211 100644
--- a/aio/content/examples/testing/src/app/dashboard/dashboard.component.css
+++ b/aio/content/examples/testing/src/app/dashboard/dashboard.component.css
@@ -1,7 +1,7 @@
 [class*='col-'] {
   float: left;
 }
-*, *:after, *:before {
+*, *::after, *::before {
 	-webkit-box-sizing: border-box;
 	-moz-box-sizing: border-box;
 	box-sizing: border-box;
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 4b7ec1c3ee..7ce1157b01 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
@@ -10,7 +10,7 @@
 a {
   text-decoration: none;
 }
-*, *:after, *:before {
+*, *::after, *::before {
   -webkit-box-sizing: border-box;
   -moz-box-sizing: border-box;
   box-sizing: border-box;
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 938b84b2b0..2f6736bc96 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
@@ -10,7 +10,7 @@
 a {
   text-decoration: none;
 }
-*, *:after, *:before {
+*, *::after, *::before {
   -webkit-box-sizing: border-box;
   -moz-box-sizing: border-box;
   box-sizing: border-box;
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 938b84b2b0..2f6736bc96 100644
--- a/aio/content/examples/universal/src/app/dashboard/dashboard.component.css
+++ b/aio/content/examples/universal/src/app/dashboard/dashboard.component.css
@@ -10,7 +10,7 @@
 a {
   text-decoration: none;
 }
-*, *:after, *:before {
+*, *::after, *::before {
   -webkit-box-sizing: border-box;
   -moz-box-sizing: border-box;
   box-sizing: border-box;