Adjust card background in dark mode

dashboard/src/theme.scss

@@ -65,7 +65,7 @@ html {
 
 @media (prefers-color-scheme: dark) {
     html {
-        --card-background: #181e2a;
+        --card-background: #15181f;
         --navbar-background: #11161f;
         --body-background: #0b0e14;
     }
@@ -390,6 +390,7 @@ html, body {
     z-index: 1000;
     transition: all 250ms ease;
     width: 250px;
+    min-width: 250px;
     height: 100%;
     white-space: nowrap !important;
     overflow: hidden;
@@ -406,6 +407,7 @@ html, body {
         top: 0;
         left: 0;
         width: 0;
+        min-width: 0;
         padding: 22px 0 10px 0;
         border-right: 0;
     }
@@ -2509,7 +2511,7 @@ tag-input {
         color: white;
     }
 
-    footer, .card, .app-configure-links div.active {
+    footer, .app-configure-links div.active {
         background-color: $backgroundDark;
     }