diff --git a/src/librustdoc/html/static/css/rustdoc.css b/src/librustdoc/html/static/css/rustdoc.css
index 28ed94432c8..867275cf4fb 100644
--- a/src/librustdoc/html/static/css/rustdoc.css
+++ b/src/librustdoc/html/static/css/rustdoc.css
@@ -953,6 +953,7 @@ table,
 	display: table;
 	padding: 0;
 	margin: 0;
+	width: 100%;
 }
 .item-table > li {
 	display: table-row;