diff --git a/public/assets/css/designsystem_formbuilder.css b/public/assets/css/designsystem_formbuilder.css
index 84d6d57a..5f4f360e 100644
--- a/public/assets/css/designsystem_formbuilder.css
+++ b/public/assets/css/designsystem_formbuilder.css
@@ -26,6 +26,10 @@
     border-radius: 2px;
     box-sizing: border-box;
 }
+.formbuilder > label > img {
+    max-height: 110px;
+    width: 100%;
+}
 .formbuilder .fileupload-image object {
     background: var(--bg-color);
     height: 300px;
diff --git a/public/assets/lib/animate.d.ts b/public/assets/lib/animate.d.ts
index e80cc351..e0796906 100644
--- a/public/assets/lib/animate.d.ts
+++ b/public/assets/lib/animate.d.ts
@@ -12,7 +12,7 @@ type AnimationFrames = {
     height?: string;
 };
 
-export function transition($node: HTMLElement, opts: TransitionEnter | TransitionLeave): HTMLElement;
+export function transition($node: HTMLElement, opts?: TransitionEnter | TransitionLeave): HTMLElement;
 
 export function animate($node: HTMLElement | null, opts: {
     time: number;
diff --git a/public/assets/lib/rx.d.ts b/public/assets/lib/rx.d.ts
index f6e15a39..027ce8a4 100644
--- a/public/assets/lib/rx.d.ts
+++ b/public/assets/lib/rx.d.ts
@@ -1,11 +1,11 @@
-import type { Observable, Observer } from "rx-core";
+import type { Observer } from "rx-core";
 
 import {
-    fromEvent, startWith,
+    Observable, fromEvent, startWith,
     catchError, tap, first, of,
     map, mapTo, filter, mergeMap, EMPTY, empty,
     switchMapTo, switchMap,
-    BehaviorSubject, Subject,
+    BehaviorSubject, Subject, ReplaySubject,
     pipe, share, toArray, distinctUntilChanged, from,
     combineLatest, shareReplay, repeat, interval, merge,
     debounceTime, delay, concatMap, distinct, scan, throwError,
@@ -16,7 +16,9 @@ import * as rxajax from "./vendor/rxjs-ajax.min.js";
 declare const rxjs: {
     of: typeof of,
     from: typeof from,
+    Observable: typeof Observable,
     BehaviorSubject: typeof BehaviorSubject,
+    ReplaySubject: typeof ReplaySubject,
     Subject: typeof Subject,
     catchError: typeof catchError,
     combineLatest: typeof combineLatest,