code review by fei.hong: do coupon huodong final sale three times

+* {
+    margin: 0;
+    padding: 0;
+}
+.coupon-christmas img {
+    display: block;
+    max-width: 100%;
+}
+
+.coupon-top {
+    position: relative;
+}
+.coupon-top .go-check {
+    position: absolute;
+    top: 6.95rem;
+    width: 100%;
+    height: 11.65rem;
+}
+.coupon-top .share-btn {
+    position: absolute;
+    width: 14.075rem;
+    height: 2.275rem;
+    bottom: 0.875rem;
+    left: 50%;
+    margin: 0 0 0 -7.0375rem;
+    background-size: 100%;
+
+}
+
+.coupon-bottom {
+    height: 10.825rem;
+    background: url(../../img/final/160125/bottom-bg.png) no-repeat bottom center;
+    background-size: 100% 100%;
+}
+
+.coupon-banner {
+    text-align: center;
+    font-size: 0;
+}
+.coupon-banner a {
+    display: inline-block;
+    width: 6.85rem;
+    height: 3.85rem;
+    margin: 0 0.175rem 0.1rem;
+}
+.coupon-banner img {
+    display: block;
+    width: 100%;
+    height: 100%;
+}
+.bottom-btn {
+    position: relative;
+    margin: 0.375rem auto 0;
+    width: 14.05rem;
+    height: 1.775rem;
+    font-size: 0;
+}
+.bottom-btn a{
+    position: absolute;
+    top: 0;
+    width: 7.65rem;
+    height: 100%;
+}
+.bottom-btn a.follow-yoho {
+    width: 6.0rem;
+    left: 0;
+}
+.bottom-btn a.download-yoho {
+    right: 0;
+}
+.modal {
+    position: fixed;
+    top: 0;
+    right: 0;
+    bottom: 0;
+    left: 0;
+    background: url(../../img/final/160125/share.png) center top no-repeat;
+    -webkit-background-size: 100%;
+    -moz-background-size: 100%;
+    background-size: 100%;
+    display: none;
+}
+
+.has-done {
+    position: fixed;
+    top: 0;
+    right: 0;
+    bottom: 0;
+    left: 0;
+    background: rgba(0,0,0,0.4) url(../../img/final/160125/11.png);
+    background-repeat: no-repeat;
+    background-size: 80% auto;
+    background-position: center center;
+    overflow: hidden;
+    display: none;
+}
+
+.dialog-box {
+    display: none;
+    position: fixed;
+    top: 0;
+    right: 0;
+    bottom: 0;
+    left: 0;
+    background: rgba(0,0,0,0.4);
+    z-index: 999;
+}
+
+.dialog-inner {
+    position: absolute;
+    width: 13.425rem;
+    height: 8.9rem;
+    top: 50%;
+    left: 50%;
+    margin: -4.45rem 0 0 -6.7125rem;
+} 
+
+.dialog-inner img {
+    max-width: 100%;
+}  
+
+.dialog-inner span {
+    position: absolute;
+    width: 6.85rem;
+    height: 1.45rem;
+    bottom: 0.9rem;
+    left: 50%;
+    margin: 0 0 0 -3.425rem;
+    cursor: pointer;
+}