There are additional module designs available that you can control by entering a correct suffix name as a module parameter.
If you need to mix suffixes then separate classes with some space.

1. Available menu designs:

2. The search module may be displayed in a non standard way:

Suffix name: jm-search

3. The DJ-MegaMenu module may be displayed vertically:

Suffix name: djmegamenu-vertical

4. Additional and very useful suffix to remove the space around the module.

Default:

Using jm-nospace module suffix:

5.  Additional and very useful suffix to make your modules' height the same.
You just have to put a suffix at a module configuration to get the specified module height.

See here the screenshot:

_mod300 means that your module will be of 300 pixels high.