This is my website - http://www.afternoons.com.au/ - using Big Cartel, Luna Theme. At the moment, when products are placed in the cart, the cart doesn't show any number or dollar value and I can't find how to edit this for Luna theme. I know other big cartel themes have mini carts..is this something that can be adapted to luna theme and if so, how? Thank you!
You can change this by heading to Customize Design > Advanced > Layout in your admin, and scroll down to find the long line of code that ends with this:
<li {% if page.full_url contains '/cart' %}class="selected"{% endif %}><a href="/cart">Cart</a></li>
Change that to the following, and you're all set:
<li {% if page.full_url contains '/cart' %}class="selected"{% endif %}><a href="/cart">Cart {{ cart.subtotal | money_with_sign }}</a></li>
If you want to use the number of items in the cart instead of the cart subtotal, you can replace {{ cart.subtotal | money_with_sign }} with {{ cart.item_count }}