Staring to implement mouse handlers.

src/theme/map.css

@@ -1,9 +1,17 @@
 .tiles {
-  position: absolute;
+  position: relative;
+  width: 100%;
+  height: 100%;
+}
+
+.tiles p {
+  z-index: 20;
+  position: relative;
+  width: 100%;
+  height: 100%;
 }
 
 .tiles img {
-    max-width: none;
-    position: absolute;
+  max-width: none;
+  position: absolute;
 }
-