diff --git a/src/style.css b/src/style.css
index 5e153f0..c3fda44 100644
--- a/src/style.css
+++ b/src/style.css
@@ -213,7 +213,7 @@ body {
   position: fixed;
   inset: 0;
   background: rgba(6, 6, 14, 0.92);
-  z-index: 100;
+  z-index: 1000;
   align-items: center;
   justify-content: center;
   flex-direction: column;
@@ -290,7 +290,7 @@ body {
   position: fixed;
   inset: 0;
   background: rgba(6, 6, 14, 0.88);
-  z-index: 200;
+  z-index: 1001; /* above Leaflet's z-index 400-1000 range */
   align-items: center;
   justify-content: center;
 }