diff --git a/alfa-client/apps/admin/src/styles.scss b/alfa-client/apps/admin/src/styles.scss
index 7b1b58c9142cd339bb9d67222e7a1c619bc151dc..9a4448d0f9c72e50e1aac1b190f36cf3118d060a 100644
--- a/alfa-client/apps/admin/src/styles.scss
+++ b/alfa-client/apps/admin/src/styles.scss
@@ -7,8 +7,6 @@
 @import 'libs/design-system/src/lib/tailwind-preset/root.css';
 @import 'libs/ui/src/lib/font/font_material';
 
-@import 'libs/admin/settings/src/lib/postfach/postfach-container/postfach-form/postfach-signatur/postfach-signatur.component.theme.scss';
-
 @include mat.all-component-typographies();
 @include mat.core();
 
diff --git a/alfa-client/libs/admin/settings/src/lib/postfach/postfach-container/postfach-form/postfach-signatur/postfach-signatur.component.html b/alfa-client/libs/admin/settings/src/lib/postfach/postfach-container/postfach-form/postfach-signatur/postfach-signatur.component.html
index a69ca6d98913e8ad0936e9cbde551ffa9ef08b55..a0d251c9e393b6755b2705705da3e049a2271e55 100644
--- a/alfa-client/libs/admin/settings/src/lib/postfach/postfach-container/postfach-form/postfach-signatur/postfach-signatur.component.html
+++ b/alfa-client/libs/admin/settings/src/lib/postfach/postfach-container/postfach-form/postfach-signatur/postfach-signatur.component.html
@@ -5,6 +5,7 @@
   </p>
   <ods-textarea-editor
     [formControlName]="formServiceClass.SIGNATUR_FIELD"
+    [isResizable]="false"
     data-test-id="signatur-text"
     label=""
     rows="6"
diff --git a/alfa-client/libs/admin/settings/src/lib/postfach/postfach-container/postfach-form/postfach-signatur/postfach-signatur.component.theme.scss b/alfa-client/libs/admin/settings/src/lib/postfach/postfach-container/postfach-form/postfach-signatur/postfach-signatur.component.theme.scss
deleted file mode 100644
index 638f52eb9bccd7cf3edebcc349046b5dfcb9b610..0000000000000000000000000000000000000000
--- a/alfa-client/libs/admin/settings/src/lib/postfach/postfach-container/postfach-form/postfach-signatur/postfach-signatur.component.theme.scss
+++ /dev/null
@@ -1,5 +0,0 @@
-postfach-signatur {
-  textarea {
-    resize: none !important;
-  }
-}
diff --git a/alfa-client/libs/design-component/src/lib/form/textarea-editor/textarea-editor.component.html b/alfa-client/libs/design-component/src/lib/form/textarea-editor/textarea-editor.component.html
index c27f425a3f9ca703f85b9961a8c87175a50a0a9f..baa159622243b8c03783314ee0f27e17cf6c78a4 100644
--- a/alfa-client/libs/design-component/src/lib/form/textarea-editor/textarea-editor.component.html
+++ b/alfa-client/libs/design-component/src/lib/form/textarea-editor/textarea-editor.component.html
@@ -7,6 +7,7 @@
   [attr.data-test-id]="(label | convertForDataTest) + '-textarea-editor'"
   [required]="isRequired"
   [focus]="focus"
+  [isResizable]="isResizable"
 >
   <ods-validation-error
     error
diff --git a/alfa-client/libs/design-component/src/lib/form/textarea-editor/textarea-editor.component.ts b/alfa-client/libs/design-component/src/lib/form/textarea-editor/textarea-editor.component.ts
index a47b955192b12c4a9ce1379062cd16543e455e2a..5dea452149b2facd76f03b209835786e7af4b970 100644
--- a/alfa-client/libs/design-component/src/lib/form/textarea-editor/textarea-editor.component.ts
+++ b/alfa-client/libs/design-component/src/lib/form/textarea-editor/textarea-editor.component.ts
@@ -24,6 +24,7 @@ export class TextareaEditorComponent extends FormControlEditorAbstractComponent
   @Input() rows: number = 10;
   @Input() isRequired: boolean = false;
   @Input() focus: boolean = false;
+  @Input() isResizable: boolean = true;
 
   get variant(): string {
     return this.invalidParams.length > 0 ? 'error' : 'default';
diff --git a/alfa-client/libs/design-system/src/lib/form/textarea/textarea.component.ts b/alfa-client/libs/design-system/src/lib/form/textarea/textarea.component.ts
index 2c4340b9f30232e900ef8a4ac8c845adf4765d41..5c418556063b84c751fd274fbd901f18cd3eb4a3 100644
--- a/alfa-client/libs/design-system/src/lib/form/textarea/textarea.component.ts
+++ b/alfa-client/libs/design-system/src/lib/form/textarea/textarea.component.ts
@@ -38,7 +38,7 @@ type TextareaVariants = VariantProps<typeof textareaVariants>;
         [id]="id"
         [formControl]="fieldControl"
         [rows]="rows"
-        [ngClass]="textareaVariants({ variant })"
+        [ngClass]="[textareaVariants({ variant }), isResizable ? 'resize' : 'resize-none']"
         [placeholder]="placeholder"
         [autocomplete]="autocomplete"
         [attr.aria-required]="required"
@@ -64,6 +64,7 @@ export class TextareaComponent {
   @Input() variant: TextareaVariants['variant'];
   @Input() fieldControl: FormControl = new FormControl(EMPTY_STRING);
   @Input() required: boolean = false;
+  @Input() isResizable: boolean = true;
 
   @Input() set focus(value: boolean) {
     if (value && this.textAreaElement) {