Hi,
1. Because of the different of image sizes http://prntscr.com/ps2u8p -> http://prntscr.com/ps2ubr. You should use same size for all images, or try this plugin:
2. Add below code to Theme Options -> Additional CSS
@media only screen and (max-width: 480px){ .products-grid .product { width: 100%; } }
Regards, Hung PD
