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Download button which allows to download desktop app

Hello everyone!
I need your help! I try to find out how can I create the download button on my Webflow site which allows downloading the desktop app for macOS and Windows. Like here https://bibliu.com/#/platform
And is it even possible to do that? I know it is possible for PDF file, but I don’t know how to make it for downloading the file which you can install later on the PC. Thank you so much!