diff --git a/hwe/ts/v_join.ts b/hwe/ts/v_join.ts
index 66abce02..2ef5a4a5 100644
--- a/hwe/ts/v_join.ts
+++ b/hwe/ts/v_join.ts
@@ -1,5 +1,8 @@
 import { createApp } from 'vue'
 import PageJoin from '@/PageJoin.vue';
 import BootstrapVue3 from 'bootstrap-vue-3'
+import { auto500px } from './util/auto500px';
+
+auto500px();
 
 createApp(PageJoin).use(BootstrapVue3).mount('#app')
\ No newline at end of file