dnet-applications/frontends/dnet-is-application/src/app/resources/content-dialog.html

<h1 mat-dialog-title>Edit content</h1>

<div mat-dialog-content>
    CONTENT FORM HERE
</div>

<div mat-dialog-actions>
  <button mat-stroked-button color="primary" mat-dialog-close>Close</button>
</div>