diff --git a/src/main.ts b/src/main.ts
index fe9b553..8677d9d 100644
--- a/src/main.ts
+++ b/src/main.ts
@@ -32,12 +32,6 @@ import i18next from "i18next";
 // @ts-ignore
 import translations from "./translations/index.mjs";
 
-declare global {
-  interface Window {
-    pageContent: Element;
-  }
-}
-
 async function onLoad(): Promise<void> {
   document.body.innerHTML = "";
   document.body.appendChild(makeElement({ tag: "div", id: "navBarReplace" }));
@@ -64,8 +58,6 @@ async function onLoad(): Promise<void> {
     }),
   );
 
-  window.pageContent = document.querySelector("#pageContent");
-
   const pageRouter = new PageRouter(
     pageList,
     pageState,
diff --git a/src/pages/Transit/TransitDecrypt.ts b/src/pages/Transit/TransitDecrypt.ts
index b2c53c2..f0be5a8 100644
--- a/src/pages/Transit/TransitDecrypt.ts
+++ b/src/pages/Transit/TransitDecrypt.ts
@@ -106,7 +106,7 @@ export class TransitDecryptPage extends Page {
         i18next.t("transit_decrypt_decryption_result_modal_title"),
         plaintext,
       );
-      document.body.querySelector("#pageContent").appendChild(modal);
+      this.router.pageContentElement.appendChild(modal);
       modal.show();
     } catch (e: unknown) {
       const error = e as Error;
diff --git a/src/pages/Transit/TransitEncrypt.ts b/src/pages/Transit/TransitEncrypt.ts
index 3f02c1e..abd9d9c 100644
--- a/src/pages/Transit/TransitEncrypt.ts
+++ b/src/pages/Transit/TransitEncrypt.ts
@@ -104,7 +104,7 @@ export class TransitEncryptPage extends Page {
         i18next.t("transit_encrypt_encryption_result_modal_title"),
         res.ciphertext,
       );
-      document.body.querySelector("#pageContent").appendChild(modal);
+      this.router.pageContentElement.appendChild(modal);
       modal.show();
     } catch (e: unknown) {
       const error = e as Error;
diff --git a/src/pages/Transit/TransitRewrap.ts b/src/pages/Transit/TransitRewrap.ts
index 426e4a4..13af704 100644
--- a/src/pages/Transit/TransitRewrap.ts
+++ b/src/pages/Transit/TransitRewrap.ts
@@ -97,7 +97,7 @@ export class TransitRewrapPage extends Page {
         key_version: parseInt(formData.get("version") as string, 10),
       });
       const modal = CopyableModal(i18next.t("transit_rewrap_result_modal_title"), res.ciphertext);
-      document.body.querySelector("#pageContent").appendChild(modal);
+      this.router.pageContentElement.appendChild(modal);
       modal.show();
     } catch (e: unknown) {
       const error = e as Error;