休眠提示居中显示并更新英文翻译

src/i18n/en-US/index.ts

@@ -197,4 +197,5 @@ export default {
   usb7: "usb7",
   usb8: "usb8",
   usb9: "usb9",
+  "device standby mode": "Device Standby Mode",
 };

src/layouts/MainLayout.vue

@@ -13,8 +13,8 @@
       <!-- page -->
       <div
         v-if="!$store.state.power_state"
-        class="fit text-h5"
-        style="position: fixed; top: 50vh; left: 50vw"
+        class="fit text-h5 text-center"
+        style="position: fixed; top: 49.5vh"
       >
         {{ $t("device standby mode") }}
       </div>

src/pad/ContentWall.vue

@@ -8,7 +8,7 @@
       style="position: absolute"
       class="full-width text-center"
     >
-      <span class="text-h5" style="z-index: 999; background: white">
+      <span class="text-h5 text-center" style="z-index: 999; background: white">
         {{ $t("device standby mode") }}
       </span>
     </div>