Enabling Hustle breaks some css and/or is on my site

Hi there, I'm opening this after a chat with Ashok.

So when I enable a Hustle optin (any styles?) - it knocks my sites css and some js as well. You can replicate this on the home page - enable one of the two Hustle optins I've created and refresh the page.

Site is careerBritannia.co.uk

Support access enabled, however I stress - please don't do any major changes without first contacting me, my client is active on the site and it is a production website.