/* 个人中心-优惠券 */
  #center-coupon{
      color: orange;
      display: none;
  }
  #center-coupon.empty {
      color: silver;
  }
  #center-coupon::before{
      content: '(';
      color: #666
  }
  #center-coupon::after{
      content: ')';
      color: #666
  }