diff --git a/src/wp-admin/css/media.css b/src/wp-admin/css/media.css
index 7526e4fcdb..26168424c1 100644
--- a/src/wp-admin/css/media.css
+++ b/src/wp-admin/css/media.css
@@ -1183,6 +1183,10 @@ audio, video {
 	box-sizing: border-box;
 }
 
+.wp-core-ui .mejs-time {
+	box-sizing: content-box;
+}
+
 /* =Media Queries
 -------------------------------------------------------------- */