.collection #collection { display: block }
.collection #footer .filter { display: block }
#content.collection { overflow: scroll }
#collection {
  display: none;
}

.product #product { display: block }
.product #footer .buynow { display: block }
.product #footer .addtocart { display: block }
#content.product { overflow: scroll }
#product {
  display: none;
}