样式调整一下

components/common/common-header.vue

@@ -185,6 +185,12 @@ export default {
       color: rgba(51, 51, 51, 1);
       line-height: 26px;
     }
+    img {
+      display: block;
+      padding-top: 2px;
+      height: 20px;
+      width: 20px;
+    }
   }
   .nav-part {
     width: 100%;
@@ -195,6 +201,7 @@ export default {
 }
 
 .nav-part {
+  width: 100%;
   font-size: 18px;
   position: fixed;
   top: 0;