woocommerce/plugins/woocommerce-admin/client/dashboard/leaderboards/style.scss

/** @format */

.woocommerce-dashboard__dashboard-leaderboards {
	.components-base-control__field {
		width: 100%;
	}
	.components-select-control__input {
		border: 1px solid $core-grey-light-700;
		height: 34px;
	}
}