diff --git a/ext/autocomplete/style.css b/ext/autocomplete/style.css
index 2f9250b4..fe24acbd 100644
--- a/ext/autocomplete/style.css
+++ b/ext/autocomplete/style.css
@@ -8,7 +8,7 @@
     list-style: none;
     margin: 0;
     padding: 0;
-    font-size: 1rem;
+    font-size: 1em;
     white-space: nowrap;
     overflow: hidden;
     text-align: left;