Creating custom forms and integrating jquery forms

I am trying to find the best way to create dynamic forms within our sitefinity website. 

The standard form builder is ok, but does not meet the professionalism of our brand. 

Is there a way to implement a custom jquery form without building a new widget? I have been able to implement the html into a page, then when I add the CSS and JS it doesn't seem to pick up the code. I can add the code as a file and then iframe it into the page, but some of the functionality still doesn't work.

Does anyone have any simple and quick ways to create dynamic forms and implement into the sitefinity site?