Make input boxes visible in cards

src/main/resources/scss/_elements.scss

@@ -487,6 +487,10 @@
     }
 }
 
+.card > .form-group > input {
+    background-color: var(--primary-grey);
+}
+
 .overlay {
     align-items: center;
     background-color: rgba(0, 0, 0, 0.5);