Thumbnail size

You should edit below properties –

1) Remove the <img> tag height and width from th file auction-feeder-page.php

i.e. remove this – width=”100″ height=”80″

After that edit file – css/ua-front-end.css

2) Adjust ‘li’ container

.wdm-auction-listing-container .wdm-apn{}

change its width, max width as you want

3) Adjust ‘img’ container

.wdm_single_auction_thumb img{}

change its width, max width, height etc as you want