diff --git a/.browserslistrc b/.browserslistrc
index e94f8140..32d4ee73 100644
--- a/.browserslistrc
+++ b/.browserslistrc
@@ -1 +1,4 @@
-defaults
+# Tailwind 4's floor: browsers without cascade layers, or Chrome before 111, can't render the
+# app's CSS, so the JS isn't transpiled for them either.
+defaults and fully supports css-cascade-layers
+not chrome < 111