.coupon-menu {
            z-index: 99;
            overflow: hidden;
            position: fixed;
            right: 0;
            width: 60px;
            height: 40px;
            font-size: 0;
            background-color: rgb(255, 0, 0);
            border-radius: 3px 0 0 3px;
        }

        .coupon-menu::after {
            content: "";
            display: block;
            width: 100%;
            height: 100%;
            background-repeat: no-repeat;
            background-image: url(/images/OpenApp.jpg?v=0.1);
            background-size: 90%;
            background-position: center;
        }