style：移动端404页面样式

src/jfw/modules/app/src/web/templates/weixin/404.html

@@ -18,17 +18,19 @@
       }
       .page-content-main{
         height: 100%;
+        display: flex;
+        flex-direction: column;
+        align-items: center;
+        justify-content: center;
       }
       .empty-container{
         display: flex;
         flex-direction: column;
         align-items: center;
-        margin-top: .8rem;
       }
       .empty-container img{
         width: 4rem;
         height: 4rem;
-        margin-bottom: .28rem;
       }
       .empty-container .tip-text{
         margin-top: .08rem;
@@ -75,7 +77,7 @@
       $('.tip-text-1').html('未知类型')
     }
     setTimeout(function(){
-      window.location.href = '/'
+      // window.location.href = '/'
     }, 5000)
   })
 </script>