presell tip

@@ -50,6 +50,10 @@ if ($('.cart-nav').length > 0) {
         //trigger lazyload
         $(window).trigger('scroll');
     });
+
+    setTimeout(function() {
+        $('#presell-tip').addClass('hide');
+    }, 3000);
 }
 
 $('.btn-balance').on('touchend', function() {

@@ -36,6 +36,37 @@
         li:first-child span {
             border-right: 1px solid #e0e0e0;
         }
+
+        li:last-child {
+            position: relative;
+        }
+
+        .presell-tip {
+            position: absolute;
+            z-index: 1;
+            left: -2rem;
+            top: 1.75rem;
+        }
+
+        .triangle {
+            width: 0;
+            height: 0;
+            border-left: 8px solid transparent;
+            border-right: 8px solid transparent;
+            border-bottom: 12px solid #000;
+            margin-left: 6rem;
+        }
+
+        .pt-content {
+            position: relative;
+            padding: 10px;
+            background: #000;
+            color: #fff;
+            font-size: 20px;
+            @include border-radius(5px);
+            text-align: center;
+            width: 7rem;
+        }
     }
 
     .login-info {

@@ -28,6 +28,10 @@
                         <span>
                             预售商品({{presellGoodsCount}})
                         </span>
+                        <div id="presell-tip" class="presell-tip">
+                            <div class="triangle"></div>
+                            <p class="pt-content">预售商品点这里结算哦~</p>
+                        </div>
                     </li>
                 </ul>
             {{/if}}