Change the background colour of Woocommerce message box

Hi,

I am developing a Woocommerce cart in my local dev environment. I would like to change the background colour of the message box displayed by Woocommerce and I am using the following css in customizer (additional css):

.woocommerce-message {
background-color: #dd3333 !important;
}

It does not seem to work though. You can recreate my requirement as follows: Install Woocommerce without adding any product to the cart. Click on the shop link. You shall get a message as follows – “No products were found matching your selection.”. I want to change the background colour of this message box.

Please help.

Thanks