src/routes/popup/+page.svelte

@@ -2,6 +2,7 @@
 
   <style lang="scss">
     #no-chromium-popup {
+      z-index: 9999;
       position: fixed;
       display: flex;
       height: 100vh;

static/popup.js

@@ -13,7 +13,7 @@ async function showNoChromiumPopup() {
       document.body.appendChild(child);
     }
 
-    document.querySelector("#no-chromium-popup").style = "";
+    document.querySelector("#no-chromium-popup").style = "z-index: 9999;";
     document.querySelector("#no-chromium-hide-button").addEventListener("click", hideNoChromiumPopup);
   }
 }