diff --git a/assets/css/main.css b/assets/css/main.css
index ba6d174..cbac8ce 100644
--- a/assets/css/main.css
+++ b/assets/css/main.css
@@ -240,6 +240,7 @@ nav {
 .dropdown {
   display: none;
   overflow: auto;
+  max-height: 70vh;
 }
 /*---- main ----*/
 .container {
diff --git a/assets/css/old.css b/assets/css/old.css
index 84c879d..458eb63 100644
--- a/assets/css/old.css
+++ b/assets/css/old.css
@@ -228,6 +228,7 @@ nav .dropdown {
 .dropdown {
   display: none;
   overflow: auto;
+  max-height: 70vh;
 }
 /*---- main ----*/
 .container {