diff --git a/pd/nw/css/default.css b/pd/nw/css/default.css
index ea5ea5da9a31f6bdc2d6545e40fcb06a8a72dfd0..4c04893a53dc793edfef52420c9495ad62dd5acb 100644
--- a/pd/nw/css/default.css
+++ b/pd/nw/css/default.css
@@ -513,10 +513,18 @@ text {
 /* Dialog to ask to save the patch before quitting */
 #save_before_quit {
     background-color: #f3f3f3;
-    border:1px solid #bbb;
+    border:1px solid #f3f3f3;
     padding: 12px;
     margin: 12px;
-    box-shadow: 7px 7px 5px grey;
+    /*box-shadow: 7px 7px 5px grey;*/
+    left: 50%;
+    top: 50%;
+    width: 40%;
+    transform: translate(-50%, -50%);
+}
+
+dialog::backdrop {
+    background: rgba(0, 0, 0, 0.5);
 }
 
 /* Search dialog */
diff --git a/pd/nw/dialog_text.html b/pd/nw/dialog_text.html
index 3ed14d27f3bc6fa986ad4e0da78b8cdbfda8872d..a1e9002949517e3fff74657f941efe57d983f714 100644
--- a/pd/nw/dialog_text.html
+++ b/pd/nw/dialog_text.html
@@ -17,8 +17,9 @@
       </button>
     </div>
     <dialog id="save_before_quit">
-      <h4>Do you want to save the changes you made before closing the window?
-      </h4>
+      <h5 style="text-align: center;">
+          Do you want to save the changes you made before closing the window?
+      </h5>
       <div class="submit_buttons">
         <button type="button"
                 onClick="ok()"
diff --git a/pd/nw/pd_canvas.html b/pd/nw/pd_canvas.html
index 5b6da1ff2d362252e9e38dbd5d5a75b087490679..33f1453881b0a78d1214af4c5448249b322b223d 100644
--- a/pd/nw/pd_canvas.html
+++ b/pd/nw/pd_canvas.html
@@ -55,9 +55,9 @@
       <ol></ol>
     </div>
     <dialog id="save_before_quit">
-      <h4><span data-i18n="canvas.save_dialog.prompt"></span>
+      <h5 style="text-align: center;"><span data-i18n="canvas.save_dialog.prompt"></span>
         <span id="save_before_quit_filename"></span>?
-      </h4>
+      </h5>
       <div class="submit_buttons">
         <button type="button"
                 id="yes_button"
@@ -76,6 +76,8 @@
         </button>
       </div>
     </dialog>
+	<div id="hscroll" style="background-color: #00000044; position: fixed; left: 2px; bottom: 2px; border-radius: 0px; width: 10px; height: 5px; visibility: hidden;"></div>
+	<div id="vscroll" style="background-color: #00000044; position: fixed; right: 2px; top: 2px; border-radius: 0px; width: 5px; height: 10px; visibility: hidden;"></div>
     <script type="text/javascript" src="./pd_canvas.js"></script>
   </body>
 </html>