add aria-labelledby

src/components/TopBar.vue

@@ -32,11 +32,11 @@
       <v-toolbar-items>
       <v-divider vertical/>   
       <v-btn text @click="toggleAbout" v-if="$route.name == 'about'"><v-icon left>chevron_left</v-icon>{{$t("back")}}</v-btn>
-        <v-dialog v-if="$route.name != 'about'" max-width="1200" width="1200" v-model="menuDialog" hide-overlay :fullscreen="$vuetify.breakpoint.mobile"
+        <v-dialog aria-labelledby="menu_label" v-if="$route.name != 'about'" max-width="1200" width="1200" v-model="menuDialog" hide-overlay :fullscreen="$vuetify.breakpoint.mobile"
         :close-on-content-click="false" transition="dialog-top-transition">
           <template v-slot:activator="{ on, attrs }">
-            <v-btn text v-bind="attrs" v-on="on">
-              <span>{{$t('menu.title')}}</span><v-icon right>menu</v-icon></v-btn>
+            <v-btn aria-labelledby="menu_label" text v-bind="attrs" v-on="on">
+              <span id="menu_label">{{$t('menu.title')}}</span><v-icon right>menu</v-icon></v-btn>
           </template>
         <Menu @close="menuDialog=false"/>
         </v-dialog>