diff --git a/backend/tests/test_sprint186_map_first_geographic_explorer.py b/backend/tests/test_sprint186_map_first_geographic_explorer.py
index 420a2cc3..6bf165a0 100644
--- a/backend/tests/test_sprint186_map_first_geographic_explorer.py
+++ b/backend/tests/test_sprint186_map_first_geographic_explorer.py
@@ -55,6 +55,7 @@ def test_map_rectangle_drag_is_wired_to_automatic_analysis() -> None:
     assert ".workbench-main .geo-map-canvas .map-container" in styles
     assert "position: absolute;" in styles
     assert "inset: 0;" in styles
+    assert "grid-template-rows: clamp(34rem, calc(100dvh - 10rem), 52rem) auto;" in styles
 
 
 def test_dataset_detail_responses_cannot_overwrite_the_latest_map_layer() -> None:
diff --git a/frontend/src/styles/app.css b/frontend/src/styles/app.css
index 7187cbb0..46684750 100644
--- a/frontend/src/styles/app.css
+++ b/frontend/src/styles/app.css
@@ -6670,6 +6670,7 @@ section {
 @media (max-width: 1500px) {
   .geo-explorer-layout {
     grid-template-columns: minmax(14rem, 16rem) minmax(28rem, 1fr);
+    grid-template-rows: clamp(34rem, calc(100dvh - 10rem), 52rem) auto;
     height: auto;
     min-height: 0;
   }