bypassing module style in advert1 module

Hello,

I was wondering if there is a way to remove the module styling (dashed border in white container) just for a specific module position such as advert1. I am trying to achieve the following for advert 1-4 module positions:

I have tried to use a module styler but am unable to get rid of the dotted border styling. On some other templates I have changed the module class suffix to do this but does not seem to do it with Vortex.

Thanks for any assistance you can provide.

Use:

this is current active style(layout.css):

.modulerow {
border: 1px dashed #CACACA;
}

You can add after that to remove border:

.upper .modulerow {
border: none;
}