Hello.

I frequently do this without any download link or title.

1. Upload the files to Canvas (I just zip them up locally, so they are in their own folder when uploaded)
2. In Files, find the file you want to display (usually index.html) and right-click to get it's link.
   
3. Create an iframe and use the address as the src, after removing everything following the question mark (?) including the question mark. The URL should end with /download.
    
4. Now your page will appear with all of the CSS and JavaScript, with no extra file name or download.