在HTML5中创建拖放编辑平台

I am in the process of thinking how I should approach this feature that I want in my application. Basically, I want my users to be able to create custom pages, and those pages would be save to later be seen. But, I want to have a unified structure and feel. I also want it to be painless and very simple. I know I could be using something like TinyMCE, but sometimes the formatting can be a pain.I am in the process of thinking how I should ap