.woocommerce #content div.product div.images .wp-post-image{
  width:100% !important;
  display:block !important;
  margin-left:auto !important;
  margin-right:auto !important;
}

@media (min-width: 768px){
  .woocommerce #content div.product div.images,
  .woocommerce div.product div.images,
  .woocommerce-page #content div.product div.images,
  .woocommerce-page div.product div.images{
    width:30% !important;
    float:left;
  }

  .woocommerce #content div.product div.summary,
  .woocommerce div.product div.summary,
  .woocommerce-page #content div.product div.summary,
  .woocommerce-page div.product div.summary{
    width:60% !important;
    float:right;
  }

  .woocommerce div.product div.images{ width:35% !important; }
  .woocommerce div.product div.summary{ width:60% !important; }

  .woocommerce div.product form.cart .button.single_add_to_cart_button{
    width:auto !important;
    padding-left:30px !important;
    padding-right:30px !important;
    display:inline-block !important;
  }
}