Changing the colour of the "remove product" button in the cart.

Site URL: https://www.coupdetatmtl.com/

site url : coupdetatmtl.com

My whole website design is very dark, so the black "X" symbol to remove a product is barely visible.

I would like to change the appearance but I cannot find how.

See picture for reference.

Add to Design > Custom CSS

/* remove product icon */
.CartTableRow-itemRemove-6Q3nP button span {
    color: white;
    opacity: 1;
}