style.css in child theme

Hi, good morning, I have a problem overloading styles in my warble child theme. For example, on the Cart page : https://chantillynegra.fr/panier/ I want to hide the image above the text: "Your cart is empty". I wanted to insert the following class in my child theme style sheet to override the default style: .wc-block-cart__empty-cart__title.with-empty-cart-icon:before { display: none !important; height: 0em !important; mask-image: none !important; mask-size: 0em !important; } But it has no effect. Would it be possible for you to look at my child theme (style.css and functions.php file) and tell me there are errors? and why my stylesheet is not making the changes ? Best regards