Broken Code on Demo Template

On this page: https://www.matrimusica.com/go/offerta/

There is code showing at the bottom of the page from the demo options. At the bottom you will see:

Here is the Text Box content :2013-1-31 13:00
Here is the Textarea content: Default text in textarea
Here is the Hex Color Picker: ffffff
Here is the Radio Value: 0
Here is the Checkbox Value: Array
Here is the Dropdown Value: default
Here is the Date Picker Value :2013-12-27
Here is the WYSIWYG content editor: Default WYSIWYG content

How can you fix this?

Also how can you make the templates full width?

https://www.ads-software.com/plugins/landing-pages/