diff --git a/atlas/templates/atlas/user_uploads.html b/atlas/templates/atlas/user_uploads.html
index e96d8ce1..158c232a 100644
--- a/atlas/templates/atlas/user_uploads.html
+++ b/atlas/templates/atlas/user_uploads.html
@@ -869,6 +869,23 @@
             overflow-y: auto;
         }
 
+        #caseSeriesModal select[multiple] {
+            min-height: 14rem;
+            background: #ffffff;
+            color: #111827;
+            border: 1px solid #ced4da;
+        }
+
+        #caseSeriesModal select[multiple] option {
+            background: #ffffff;
+            color: #111827;
+        }
+
+        #caseSeriesModal select[multiple] option:checked {
+            background: #0d6efd;
+            color: #ffffff;
+        }
+
         #series-list li {
         }
         #series-list .selected {