Adding of javascript code destroyed the Footer

Hello!
I added some javascript code to GP Hooks.
After that footer changed his height, take a look there: http://joxi.ru/GrqYj0ztBbkprz.png

No matter in what section of GP Hooks I add the code, only footer always destroing.

This is the code which I added. It is a Mail Chimp pop-up.

<script type="text/javascript" src="//s3.amazonaws.com/downloads.mailchimp.com/js/signup-forms/popup/embed.js" data-dojo-config="usePlainJson: true, isDebug: false"></script><script type="text/javascript">require(["mojo/signup-forms/Loader"], function(L) { L.start({"baseUrl":"mc.us13.list-manage.com","uuid":"95fe53388fb94ff6dcf57dfc6","lid":"d0d66a8d9d"}) })</script>