This is not how to build an LP template. Please see the instructions.
- Build code
- look at the custom code issues when you open up a new template
- design for visual cues so people know where to place things.
- set the template after testing.
- the marketer will place the content.
see templates.marketo.com for how these are structured. mkteditable won't do anything here.
https://community.marketo.com/MarketoArticle?id=kA050000000KysnCAC