woocommerce/plugins/woocommerce-admin/client/layout/transient-notices/style.scss

.woocommerce-transient-notices {
	position: fixed;
	bottom: $gap-small;
	left: 176px;
	z-index: 99999;

	@media (max-width: 960px) {
		left: 50px;
	}

	@media (max-width: 782px) {
		left: $gap;
	}
}