.coupon_list.coupon_detail .coupon_change_btn{height:15vw;margin:9vw;width:82vw;border-radius:2.4vw;background:-moz- oldlinear-gradient(#ebaeae 0,#d81919 100%);background:linear-gradient(#ebaeae,#d81919);display:flex;justify-content:center;align-items:center;font-weight:400;font-size:5.33333vw;line-height:6.4vw;text-align:center;color:#fff;position:fixed;bottom:0;left:0;z-index:1;overflow:hidden}