diff --git a/app/static/structure.css b/app/static/structure.css
index 9ffdea65..32d8ad9b 100644
--- a/app/static/structure.css
+++ b/app/static/structure.css
@@ -433,6 +433,13 @@ fieldset legend {
   }
 }
 
+@media (min-width: 992px) {
+  .navbar-expand-lg .navbar-nav .dropdown-menu {
+    overflow-y: auto;
+    max-height: 90vh;
+    overflow-x: hidden;
+  }
+}
 .low_bandwidth .dropdown-toggle::after {
   display: none;
 }
diff --git a/app/static/structure.scss b/app/static/structure.scss
index 34600068..778896d7 100644
--- a/app/static/structure.scss
+++ b/app/static/structure.scss
@@ -35,6 +35,14 @@ html {
   }
 }
 
+@include breakpoint(tablet) {
+  .navbar-expand-lg .navbar-nav .dropdown-menu {
+    overflow-y: auto;
+    max-height: 90vh;
+    overflow-x: hidden;
+  }
+}
+
 .low_bandwidth {
   .dropdown-toggle::after {
     display: none;