diff --git a/src/librustdoc/html/static/css/rustdoc.css b/src/librustdoc/html/static/css/rustdoc.css
index 5d0756d30fb53..a4d0b588abba7 100644
--- a/src/librustdoc/html/static/css/rustdoc.css
+++ b/src/librustdoc/html/static/css/rustdoc.css
@@ -629,11 +629,6 @@ h2.location a {
 	display: block;
 }
 
-.invisible {
-	width: 100%;
-	display: inline-block;
-}
-
 .content .in-band {
 	flex-grow: 1;
 	margin: 0px;
diff --git a/src/librustdoc/html/static/css/themes/ayu.css b/src/librustdoc/html/static/css/themes/ayu.css
index b7d0db1f0020f..d9a7883b10739 100644
--- a/src/librustdoc/html/static/css/themes/ayu.css
+++ b/src/librustdoc/html/static/css/themes/ayu.css
@@ -62,10 +62,6 @@ h4 {
 	background-color: #0f1419;
 }
 
-.invisible {
-	background: rgba(0, 0, 0, 0);
-}
-
 .docblock code {
 	color: #ffb454;
 }
diff --git a/src/librustdoc/html/static/css/themes/dark.css b/src/librustdoc/html/static/css/themes/dark.css
index eb64ef3e7710b..e444973691613 100644
--- a/src/librustdoc/html/static/css/themes/dark.css
+++ b/src/librustdoc/html/static/css/themes/dark.css
@@ -49,10 +49,6 @@ h2, h3, h4 {
 	background-color: #353535;
 }
 
-.invisible {
-	background: rgba(0, 0, 0, 0);
-}
-
 .docblock code, .docblock-short code {
 	background-color: #2A2A2A;
 }
diff --git a/src/librustdoc/html/static/css/themes/light.css b/src/librustdoc/html/static/css/themes/light.css
index 00cdf83589716..c31b19cef6383 100644
--- a/src/librustdoc/html/static/css/themes/light.css
+++ b/src/librustdoc/html/static/css/themes/light.css
@@ -51,10 +51,6 @@ h2, h3, h4 {
 	background-color: white;
 }
 
-.invisible {
-	background: rgba(0, 0, 0, 0);
-}
-
 .docblock code, .docblock-short code {
 	background-color: #F5F5F5;
 }