Add a prefix option

[jp26jp]

It would be great if there was a prefix option for the CSS that's being embedded. I wanted to use this form but a lot of the CSS is getting overridden.

For example:

new Card({ 
  form: 'form', 
  container: '.container',
  prefix: 'html#ecwid_html body#ecwid_body .ecwid div'
})

This would then make it so that all of the css classes added to the page would be prefixed with html#ecwid_html body#ecwid_body .ecwid div