diff --git a/src/main/frontend/components/whiteboard.css b/src/main/frontend/components/whiteboard.css
index 29a4e29f27..4643527bdb 100644
--- a/src/main/frontend/components/whiteboard.css
+++ b/src/main/frontend/components/whiteboard.css
@@ -22,7 +22,7 @@ h1.title.whiteboard-dashboard-title {
   height: 300px;
 
   .dashboard-card-checkbox {
-    @apply flex items-center justify-center rounded;
+    @apply flex items-center justify-center rounded flex-shrink-0;
     border: 2px solid var(--ls-border-color);
     visibility: hidden;
     width: 24px;
diff --git a/src/main/frontend/ui.cljs b/src/main/frontend/ui.cljs
index 9260774a5f..f440aa2fb9 100644
--- a/src/main/frontend/ui.cljs
+++ b/src/main/frontend/ui.cljs
@@ -1010,15 +1010,15 @@
 
 (rum/defc portal
   ([children]
-   (portal children #(js/document.createElement "div")))
-  ([children append-to]
+   (portal children #(js/document.createElement "div") false))
+  ([children attach-to prepend?]
    (let [[portal-anchor set-portal-anchor] (rum/use-state nil)]
      (rum/use-effect!
       (fn []
-        (let [div (or (if (fn? append-to) (append-to) append-to)
-                      (js/document.createElement "div"))]
+        (let [div (js/document.createElement "div")
+              attached (or (if (fn? attach-to) (attach-to) attach-to) js/document.body)]
           (.setAttribute div "data-logseq-portal" (str (d/squuid)))
-          (.append js/document.body div)
+          (if prepend? (.prepend attached div) (.append attached div))
           (set-portal-anchor div)
           #(.remove div)))
       [])