diff --git a/src/theme.scss b/src/theme.scss
index b83182fc8..9687dbd9c 100644
--- a/src/theme.scss
+++ b/src/theme.scss
@@ -2163,4 +2163,35 @@ tag-input {
         color: $textColor;
         border: 1px solid $backgroundDark;
     }
+
+    .has-background {
+        .card {
+            background-color: #000000e3;
+            border-radius: 2px;
+        }
+
+        .navbar {
+            background-color: #000000e3;
+        }
+
+        .navbar .navbar-collapse {
+            background-color: transparent;
+        }
+
+        footer {
+            background-color: #000000e3;
+        }
+
+        .btn-default {
+            background-color: #000000cf;
+            border-color: #868686cf;
+            color: white;
+
+            &:hover {
+                color: white;
+                background-color: #868686cf;
+                border-color: #868686cf;
+            }
+        }
+    }
 }