登录验证码尺寸调整

src/views/login/index.vue

@@ -283,6 +283,13 @@ export default {
       top: 30px;
     }
 
+    .van-field__button{
+      img{
+        width: 80px;
+        height: 35px;
+      }
+    }
+
     .form {
       height: calc(100% - 44px);
       width: calc(100% - 40px);