Google Chrome is one such awesome browser still it has some issues like the download bar strip which gets displayed everytime you download anything in google chrome. In order to remove the download bar, you will need to click the cross button on the right of the download bar.
Many google chrome users like me don’t like to see this download bar to see once the download is complete, some just want a keyboard shortcut that should be added to show hide toggle the download bar.
As if now there is no solution to hiding the download bar automatically or with a keyboard shortcut, but google chrome team confirmed here that they are working on this issue.
You can track the progress of this issue or give your feedback about this issue here