Hide add to cart button on certain products

Hi,

Would somebody be able to help, I need to hide the add to cart and quantity on certain products only. I've managed to use code in the forum to remove the price to POA when I set price at 0.00 on certain products, but add to cart is still there and quantity. 

Many thanks

First, create a tag with name

natc

Next, assign this tag for all products where you want to remove Add to Cart, Quantity

Next, use this code to Website > Website Tools > Custom CSS

/* Hide add to cart quantity */
.tag-natc div.sqs-add-to-cart-button-wrapper {
    display: none !important;
}
/* hide quantity */
.tag-natc div.product-quantity-input {
    display: none !important;
}