Make responsive a category view

[hernanrod]

Hi all

at first, sorry by my bad english

I have a gantry based responsive template
When I resize my browser window, the columns autoarrange with window size

But I want the product list arranges one below other

I see there are a few templates wich do that, buy I dont want to replace my entire template

Some one knows the code to make this?


here is and example of my website
http://www.chemical-guys.com.ar/index.php/catalogo/quick-detailers


thanks!