Hello cpatte7372,

Thank you for your question on image resizinv via CSS. Unfortunately the link you sent is asking for a login to continue so I cannot answer specifically to your question. However with any site, you can use the Chrome browser, hover over the image you want to resize, and simply right click and "Inspect Element". This will allow you to see the code around that image. Look for the class name related to the image and then look to the right column for a list of the CSS files involved. Then you can see the file names and know what files you need to edit for CSS.

Kindest Regards,
Scott M