diff --git a/src/librustdoc/html/static/css/rustdoc.css b/src/librustdoc/html/static/css/rustdoc.css
index 7bc8fbb1ea7e..08f797c0e2d1 100644
--- a/src/librustdoc/html/static/css/rustdoc.css
+++ b/src/librustdoc/html/static/css/rustdoc.css
@@ -442,7 +442,6 @@ img {
 }
 
 .source .sidebar > *:not(#sidebar-toggle) {
-	opacity: 0;
 	visibility: hidden;
 }
 
@@ -451,7 +450,6 @@ img {
 }
 
 .source-sidebar-expanded .source .sidebar > *:not(#sidebar-toggle) {
-	opacity: 1;
 	visibility: visible;
 }