A CSS class which is appended to the html
tag when the user cart is not empty.
Showing the cart quantity number in the header:
<span class="header__cart-quantity">
(
<span data-ajax-cart-bind="item_count">
{{ cart.item_count }}
</span>
)
</span>
html.js-ajax-cart-not-empty .header__cart-quantity {
display: inline-block;
}