How to create Portfolio with a different aspect ratio than other portfolios of the website

Site URL: http://www.mattferr.com

I have more than one portfolio page on my  photography website. At the moment they’re using a grid layout with a square aspect ratio (see /destinations or /brands). Similarly I’m building out a video portfolio page but I would like that portfolio to have a horizontal(1920x1080) aspect ratio instead. 
 

By default when I switch the video portfolio to a horizontal aspect ratio it seems to do it globally site wide. Which is not what I want.  How can I achieve this customization to this video portfolio page using css code? 

17 minutes ago, MattFerr said:

Site URL: http://www.mattferr.com

I have more than one portfolio page on my  photography website. At the moment they’re using a grid layout with a square aspect ratio (see /destinations or /brands). Similarly I’m building out a video portfolio page but I would like that portfolio to have a horizontal(1920x1080) aspect ratio instead. 
 

By default when I switch the video portfolio to a horizontal aspect ratio it seems to do it globally site wide. Which is not what I want.  How can I achieve this customization to this video portfolio page using css code? 

what is your video portfolio url

http://mattferr.com/motion

1 hour ago, MattFerr said:

http://mattferr.com/motion

try 

#collection-6043dacb159ecb2375cc0f80 .portfolio-grid-overlay .grid-image, #collection-6043dacb159ecb2375cc0f80 .portfolio-grid-overlay .grid-item {
  padding-bottom: 56.25% !important;
}