diff --git a/ui/css/app.css b/ui/css/app.css
index 3aed23e..fe005f1 100644
--- a/ui/css/app.css
+++ b/ui/css/app.css
@@ -178,6 +178,8 @@ body {
       }
 
       & > .queue {
+        max-height: 400px;
+        overflow-y: auto;
         & > .pending {
           animation: 0.5s linear 0s infinite alternate pending-blink;
           border-radius: 0.4em;