diff --git a/src/css/chart-geomap.less b/src/css/chart-geomap.less
index 9febc1be..0f5cac65 100644
--- a/src/css/chart-geomap.less
+++ b/src/css/chart-geomap.less
@@ -9,9 +9,13 @@
     filter: unset;
   }
 
-  // Zoom in button. Position button text.
-  .highcharts-map-navigation text {
-    font-size: 1.2em !important;
+  // Zoom in/out buttons. Position button text.
+  .highcharts-zoom-in text {
+    transform: translateY( -3px );
+  }
+
+  .highcharts-zoom-out text {
+    transform: translate( 3px, -3px );
   }
 
   // Set colors.