font-family: 'SimHei';

改body字体为

src/App.vue

@@ -251,8 +251,9 @@ export default {
 }
 
 body {
-  font-family: "Helvetica Neue", Helvetica, "PingFang SC", "Hiragino Sans GB",
-    "Microsoft YaHei", "微软雅黑", Arial, sans-serif;
+	font-family: 'SimHei';
+  /* font-family: "Helvetica Neue", Helvetica, "PingFang SC", "Hiragino Sans GB",
+    "Microsoft YaHei", "微软雅黑", Arial, sans-serif; */
 }
 
 #app {