diff --git a/public/assets/boot/ctrl_boot_frontoffice.js b/public/assets/boot/ctrl_boot_frontoffice.js
index e73c7a74..e067ce63 100644
--- a/public/assets/boot/ctrl_boot_frontoffice.js
+++ b/public/assets/boot/ctrl_boot_frontoffice.js
@@ -15,6 +15,7 @@ export default async function main() {
             // setup_sw(), // TODO
             setup_blue_death_screen(),
             setup_history(),
+            setup_polyfill(),
         ]);
 
         await Promise.all([ // procedure with dependency on config
@@ -117,3 +118,9 @@ async function setup_history() {
 async function setup_title() {
     document.title = window.CONFIG.name || "Filestash";
 }
+
+async function setup_polyfill() {
+    if (!("replaceChildren" in document.body)) {
+        await loadJS(import.meta.url, "../lib/polyfill.js");
+    }
+}
diff --git a/public/assets/components/dropdown.js b/public/assets/components/dropdown.js
index 83d3bed2..0f9b96b4 100644
--- a/public/assets/components/dropdown.js
+++ b/public/assets/components/dropdown.js
@@ -3,14 +3,16 @@ import { animate, slideYIn } from "../lib/animate.js";
 import assert from "../lib/assert.js";
 import { loadCSS } from "../helpers/loader.js";
 
-await loadCSS(import.meta.url, "./dropdown.css");
-
 export default class ComponentDropdown extends HTMLDivElement {
     constructor() {
         super();
         this.render();
     }
 
+    async connectedCallback() {
+        await loadCSS(import.meta.url, "./dropdown.css");
+    }
+
     static get observedAttributes() {
         return ["options"];
     }
diff --git a/public/assets/lib/polyfill.js b/public/assets/lib/polyfill.js
index e69de29b..89b4b433 100644
--- a/public/assets/lib/polyfill.js
+++ b/public/assets/lib/polyfill.js
@@ -0,0 +1,11 @@
+Document.prototype.replaceChildren ||= replaceChildren;
+DocumentFragment.prototype.replaceChildren ||= replaceChildren;
+Element.prototype.replaceChildren ||= replaceChildren;
+
+function replaceChildren(...new_children) {
+  const { childNodes } = this;
+  while (childNodes.length) {
+    childNodes[0].remove();
+  }
+  this.append(...new_children);
+}