diff --git a/src/librustdoc/html/static/css/themes/ayu.css b/src/librustdoc/html/static/css/themes/ayu.css
index 1355ae9c2bacd..ce416f77afe90 100644
--- a/src/librustdoc/html/static/css/themes/ayu.css
+++ b/src/librustdoc/html/static/css/themes/ayu.css
@@ -215,10 +215,10 @@ pre.rust .kw-2, pre.rust .prelude-ty {}
 .scraped-example .example-wrap .rust span.highlight.focus {
 	background: rgb(124, 75, 15);
 }
-.scraped-example:not(.expanded) .code-wrapper:before {
+.scraped-example:not(.expanded) .code-wrapper::before {
 	background: linear-gradient(to bottom, rgba(15, 20, 25, 1), rgba(15, 20, 25, 0));
 }
-.scraped-example:not(.expanded) .code-wrapper:after {
+.scraped-example:not(.expanded) .code-wrapper::after {
 	background: linear-gradient(to top, rgba(15, 20, 25, 1), rgba(15, 20, 25, 0));
 }
 .toggle-line-inner {
diff --git a/src/librustdoc/html/static/css/themes/dark.css b/src/librustdoc/html/static/css/themes/dark.css
index 84449542f22bf..33d934ff3c312 100644
--- a/src/librustdoc/html/static/css/themes/dark.css
+++ b/src/librustdoc/html/static/css/themes/dark.css
@@ -111,10 +111,10 @@
 .scraped-example .example-wrap .rust span.highlight.focus {
 	background: rgb(124, 75, 15);
 }
-.scraped-example:not(.expanded) .code-wrapper:before {
+.scraped-example:not(.expanded) .code-wrapper::before {
 	background: linear-gradient(to bottom, rgba(53, 53, 53, 1), rgba(53, 53, 53, 0));
 }
-.scraped-example:not(.expanded) .code-wrapper:after {
+.scraped-example:not(.expanded) .code-wrapper::after {
 	background: linear-gradient(to top, rgba(53, 53, 53, 1), rgba(53, 53, 53, 0));
 }
 .toggle-line-inner {
diff --git a/src/librustdoc/html/static/css/themes/light.css b/src/librustdoc/html/static/css/themes/light.css
index 68dc0ce539b05..30e91077d33ff 100644
--- a/src/librustdoc/html/static/css/themes/light.css
+++ b/src/librustdoc/html/static/css/themes/light.css
@@ -108,10 +108,10 @@
 .scraped-example .example-wrap .rust span.highlight.focus {
 	background: #f6fdb0;
 }
-.scraped-example:not(.expanded) .code-wrapper:before {
+.scraped-example:not(.expanded) .code-wrapper::before {
 	background: linear-gradient(to bottom, rgba(255, 255, 255, 1), rgba(255, 255, 255, 0));
 }
-.scraped-example:not(.expanded) .code-wrapper:after {
+.scraped-example:not(.expanded) .code-wrapper::after {
 	background: linear-gradient(to top, rgba(255, 255, 255, 1), rgba(255, 255, 255, 0));
 }
 .toggle-line-inner {