OZG-2966 OZG-3177 Improve download button UI

goofy-client/libs/postfach/src/lib/postfach-mail-list-container/postfach-mail-list/postfach-mail-list.component.scss

@@ -51,7 +51,7 @@ h3 {
 	font-weight: 500;
 }
 
-.nachrichten {
+.nachrichten-header {
 	border-top: 1px solid rgba(0, 0, 0, 0.08);
 	margin-top: 16px;
 }

goofy-client/libs/postfach/src/lib/postfach-mail-pdf-button-container/postfach-mail-pdf-button-container.component.scss

@@ -21,3 +21,8 @@
  * Die sprachspezifischen Genehmigungen und Beschränkungen
  * unter der Lizenz sind dem Lizenztext zu entnehmen.
  */
+
+ :host {
+	display: block;
+	margin: 16px 24px;
+ }
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goofy-client/libs/ui/src/lib/ui/button-with-spinner/button-with-spinner.component.html

@@ -25,7 +25,7 @@
 -->
 <button mat-stroked-button data-test-class="icon-button" [attr.data-test-id]="dataTestId"
 		[color]="color" [type]="type" [disabled]="isDisabled" [matTooltip]="toolTip"
-		(click)="clickEmitter.emit($event)">
+		[class.with-text]="text" (click)="clickEmitter.emit($event)">
 
 	<mat-icon *ngIf="icon" data-test-class="icon"
 			[style.visibility]="isDisabled ? 'hidden' : 'visible'">

goofy-client/libs/ui/src/lib/ui/button-with-spinner/button-with-spinner.component.scss

@@ -39,5 +39,10 @@ goofy-client-spinner {
 }
 
 button {
-	min-width: 54px;
+	min-width: 36px;
+	min-height: 36px;
+	padding: 0;
+	&.with-text {
+		padding: 0 15px;
+	}
 }
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