diff --git a/web/text_layer_builder.css b/web/text_layer_builder.css
index 6a4a0c5c71bf15..9e9f5b6fa6bed1 100644
--- a/web/text_layer_builder.css
+++ b/web/text_layer_builder.css
@@ -24,6 +24,7 @@
   forced-color-adjust: none;
   transform-origin: 0 0;
   caret-color: CanvasText;
+  z-index: 0;
 
   &.highlighting {
     touch-action: none;