Question: I'd like to create a custom drag and drop template so I can increase the design possibilities without losing the functionality. I can't find anything in their documentation.

I was hoping to create something like [this](http://i.stack.imgur.com/KhAd3.png), not sure if I'm missing something obvious but I can't find a drag and drop that allows for the different coloured background with columns too.

I could use a block of code but I can't edit the css styles so it wouldn't be responsive for mobile and also not very friendly for those who don't know html.

Answer: 
I know this is an old question, but while searching for this myself I stumbled upon a solution posted [here](https://stackoverflow.com/a/41620134/3041866).

Basically it is possible to code your own drag n' drop template, but the solution has not been documented.

1. Find one of the Mailchimp templates (either one of the basic templates or a custom template from the 'Themes' menu.
2. Use 'Inspect element' and copy the source code of the iFramed html-email.
3. Paste in your preferred HTML-editor and modify as intended
4. Create your own template from the 'Paste in code' mode
5. If you want custom modules to be added by default, edit using the menu 'Edit design' in the bottom of the screen.
6. Save and exit :)
You can create your own drag and drop template you need to add the following into your html coded template where you want the 'drag and drop' feature to exist.

```
<div id="templateBody" mc:container="container_name" mccontainer="container_name" class="tpl-container">                                
    <div mc:block="3502204" mc:blocktype="text" mcblock="3502204" mcblocktype="text" class="tpl-block"></div>
</div>

```

This can be repeated in your code multiple times for multiple insertions. I could not find documentation to indicate if the container name or block number needs to be unique, I did make it unique in my template.