When visiting this page on Edge (Chromium distribution) Thanks for downloading CCleaner the little box that says "Click here to install" points to the wrong area in the Edge user interface.
It points to the bottom left of the application (like it would in Chrome) although the downloads are displayed on the top right of the user interface.
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Needs a programming check of where the download icon actually is rather than just where it is 'usually'.
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I don't think html or php can dig that information out. The website reads what browser you have and shows per that browser; granted the edge chromium script needs updating since the browser changed default, but nondefault, if a user's changed that they probably know where it is and don't need a "helpful hint" of where to look for downloads.