wrap content in main tag, add language to html root

ui/layouts/screen.vue

@@ -1,8 +1,8 @@
 <template>
   <div class="screen bg-primary dark">
-    <div class="content">
+    <main class="content">
       <nuxt />
-    </div>
+    </main>
 
     <div class="footer">
       <nuxt-link to="/login">Login</nuxt-link>

ui/nuxt.config.js

@@ -8,6 +8,9 @@ export default {
    */
   head: {
     title: pkg.name,
+    htmlAttrs: {
+      lang: 'en-US'
+    },
     meta: [
       { charset: 'utf-8' },
       { name: 'viewport', content: 'width=device-width, initial-scale=1' },