diff --git a/app/css/screen.css b/app/css/screen.css
index ad2924e..4502a22 100644
--- a/app/css/screen.css
+++ b/app/css/screen.css
@@ -160,6 +160,8 @@ div.button-row {
 dialog {
     padding-bottom: 0;
     width: 80%;
+    border-width: 1px;
+    border-color: var(--border-color);
 }
 
 dialog * {
@@ -352,6 +354,10 @@ div#settings-dialog-scroll-container {
         scrollbar-color: #555 #222;
     }
 
+    dialog {
+        border-color: var(--dark-border-color);
+    }
+
     .markdown-body img {
         color: var(--text-dark-color);
     }