Waiting animation while download is being prepared and automatic download Actually a simple task, but I just can't find a suitable solution Data is collected in one form (HTML) After sending, the server needs, among other things, a few seconds to provide the download, a ZIP file During this time, an animation or an overlay should be displayed The download should then be displayed in the browser (e.g. like Chrome at the top right). The page should not be left. Unfortunately I couldn't get it to work, either the animation works correctly and the download only...