diff --git a/src/librustdoc/html/static/css/rustdoc.css b/src/librustdoc/html/static/css/rustdoc.css
index 9fe0dee0588..4ca826bf9e6 100644
--- a/src/librustdoc/html/static/css/rustdoc.css
+++ b/src/librustdoc/html/static/css/rustdoc.css
@@ -1391,31 +1391,10 @@ details.dir-entry {
 	padding-left: 4px;
 }
 
-details.dir-entry > summary::after {
-	content: " ►";
-	position: absolute;
-	left: -15px;
-	top: 0px;
-	font-size: 80%;
-	padding: 2px 0px;
-	/* set width to cover gap between arrow and text */
-	width: 25px;
-}
-
-details[open].dir-entry > summary::after {
-	content: " ▼";
-}
-
-details.dir-entry > summary::-webkit-details-marker,
-details.dir-entry > summary::marker {
-	display: none;
-}
-
 details.dir-entry > summary {
-	margin: 0 0 0 13px;
-	list-style: none;
+	margin: 0 0 0 -4px;
+	padding: 0 0 0 4px;
 	cursor: pointer;
-	position: relative;
 }
 
 details.dir-entry div.folders, details.dir-entry div.files {