Having Trouble w/ Templating and email through HTML

hello, my name is john and I am new to infusionsoft and especially working with HTML. I recently found a template through Leadpages that I really wanted to use and integrate into IS. I copied the code of the landing page and pasted it into the HTML builder in the Email Broadcast section. At first it populated very close to the original page, I tested it and it came into my inbox jumbled and incomplete, when I went to save the template in HTML builder it saved as a blank template and I havent been able to recover it to figure out why it tested so poorly, any help or suggestions would be appreciate. Thank You -John