bug fixes

src/pages/letter/index.vue

@@ -4,7 +4,7 @@
       <div class="inner">
         <div class="logo">
           <router-link to="/"
-            ><img src="https://zws-imgs-pub.ezijing.com/static/public/a0671ced04ce75b04f2e491b555b412d.png"
+            ><img src="https://zws-imgs-pub.ezijing.com/static/public/2a5dca328ca63abcf1c8496180adc485.png"
           /></router-link>
         </div>
       </div>
@@ -135,7 +135,7 @@ export default {
     }
   }
   .nav {
-    background-color: #af1b40;
+    background-color: #e27f4d;
     .title {
       font-size: 24px;
       font-weight: 600;