diff --git a/django/contrib/admin/static/admin/css/widgets.css b/django/contrib/admin/static/admin/css/widgets.css
index 14e82c5a070..3b5c31c7387 100644
--- a/django/contrib/admin/static/admin/css/widgets.css
+++ b/django/contrib/admin/static/admin/css/widgets.css
@@ -275,7 +275,7 @@ span.clearable-file-input label {
     padding: 0;
     border-collapse: collapse;
     background: white;
-    width: 99%;
+    width: 100%;
 }
 
 .calendar caption, .calendarbox h2 {