diff --git a/www/form/app-form.less b/www/form/app-form.less
index c28d164ed..ec44d22bf 100644
--- a/www/form/app-form.less
+++ b/www/form/app-form.less
@@ -254,6 +254,11 @@
                     &.sortable-ghost { visibility: hidden; }
                     &.sortable-drag { opacity: 0.9 !important; }
 
+                    .flatpickr-calendar.inline {
+                        box-shadow: unset;
+                        border: 1px solid @cryptpad_text_col;
+                    }
+
                     .cp-form-block-question {
                         margin-bottom: 5px;
                     }