Apologies for the hassles here. I think let’s try get Vantage out the way here and let WooCommerce handle this styling. Please try the following under Appearance > Custom CSS:

/* WooCommerce Widgets */

.widget .product_list_widget {
  margin: initial;
  list-style: initial;
  margin-right: initial;
  zoom: initial;
}
.widget .product_list_widget:before {
  content: initial;
  display: initial;
}
.widget .product_list_widget:after {
  content: initial;
  display: initial;
  clear: initial;
}
.widget .product_list_widget li {
  -ms-box-sizing: initial;
  -moz-box-sizing: initial;
  -webkit-box-sizing: initial;
  box-sizing: initial;
  margin-left: initial; 
  width: initial;
  padding-right: initial;
  float: initial;
  text-align: initial;
  margin-bottom: initial;
}
.widget .product_list_widget li img {
  width: initial;
  height: initial;
}
.widget .product_list_widget li a {
  text-decoration: initial;
  color: initial;
  font-weight: initial;
  line-height: initial;
}
.widget .product_list_widget li span.amount {
  display: initial;
}