公众号链接图修改

@@ -188,7 +188,7 @@
     .banner {
         width: 750px;
         height: 140px;
-        background-image: url("https://img11.static.yhbimg.com/yhb-img01/2019/02/26/11/01fc5fbb15e465b79abf891d8b29e4dd35.jpeg");
+        background-image: url("https://img13.static.yhbimg.com/article/2019/02/28/14/02b72ac74385bdefd089ffa860d29d0862.jpeg");
         background-size: 750px 140px;
     }