MINDBODY widget help needed please!

Hi, 

I am making a yoga  website for a friend. They signed up for MINDBODY and were kind of led to believe that the coding was all done and you just had to place widgets easily onto the Squarespace webpage. 

The timetable they seem to have put some effort into and that came out well without having to do much. But the Courses and the events tabs are just basic and look totally wrong on the site, with no way to change them on the MINDBODY side, they say it needs CSS... thanks for telling her after she paid...

Also their 'prospect' widget to gather emails looks completely trash and needs some CSS love, this is found on the bottom of the home page. I'm not a coder and I'm looking for someone to help us to make it all look in keeping with the rest of the site. 

The website is https://www.vayu-yoga.co.uk

Any help would be greatly appreciated,

Thanks

I Just checked. I think we can do this with CSS code.

What should it look like? We can give code easier

I think it would look good like this if possible