Email subscribe bar - how to hide after successful submission

We created an email subscribe bar under our nav bar. Not very pretty. So excuse the appearance while we are experimenting.

How do we get the subscribe bar (the whole pink bar) to disappear from the page after successful submission? We tried this method earlier:

Subscribe bar disappears because the trigger is the click of the submit button. But we only want the bar to disappear when the success message appears.

Can we get some help on this please? :pray: Thanks in advance!!

Here is my site Read-Only: LINK