添加默认404页面

 <template>
-  <div class="wscn-http404-container">
+  <div>
     <img src="./404.png" alt="">
   </div>
 </template>
@@ -34,14 +34,14 @@ export default {
 
 .wscn-http404 {
   position: relative;
-  width: 1200px;
+  width: 100%;
   padding: 0 50px;
   overflow: hidden;
 
   .pic-404 {
     position: relative;
     float: left;
-    width: 600px;
+    width: 100%;
     overflow: hidden;
 
     &__parent {

@@ -20,9 +20,9 @@ export function getForm(tabName, djywbm) {
         case "fwsyqslxx300":
             form = require("@/views/ywbl/fdcq2/slxx300.vue");
             break;
-         case "fwsyqslxx400":
-             form = require("@/views/ywbl/fdcq2/slxx400.vue");
-             break;
+        case "fwsyqslxx400":
+            form = require("@/views/ywbl/fdcq2/slxx400.vue");
+            break;
         case "tdslxxCfdj":
             form = require("@/views/ywbl/cfdj/tdslxx.vue");
             break;
@@ -53,6 +53,9 @@ export function getForm(tabName, djywbm) {
         case "fzxx":
             form = require("@/views/workflow/components/fzxx.vue");
             break;
+        default:
+            form = require("@/views/error-page/404.vue");
+            break;
     }
     return (r) => require.ensure([], () => r(form));
 }