how to modify select icon csshow to modify select icon css
appearance: none;
-webkit-appearance: none;
-moz-appearance: none;
background: transparent url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' width='4' height='5' viewBox='0 0 4 5'%3e%3cpath fill='%23343a40' d='M2 0L0 2h4zm0 5L0 3h4z'/%3e%3c/svg%3e") no-repeat right 1.2rem center/.8rem 4rem;