I want to change the layout of content-portfolio.php

Link is the what I want to use theme for my website.
I want the portfolio page layout to be an image on the left and detail text on the right, and stop use the slider. for example is this page: http://nord.fwp.fastwp.net/fwp_portfolio/montures/

how to do this?

The page I need help with: [log in to see the link]