HTML document for app

Hi Dominik, thank you very much I will look into it. Sorry for the late response, I was away over the holidays.
I’ve made changes in /opt/zammad/public/assets/images/icons.svg#icon-logo There I can deaktivate the zammad-Logo and the notifications that work via Javascript, but I can’t replace the logo. It seems to be constructed with vectors in CSS. Pretty cool, but difficult to work around, since I can’t find the HTML to that CSS-file.