remove sub-title from tabindex

src/App.vue

@@ -7,7 +7,7 @@
 
     <div class = "banner">
       <h1><a :class="$vuetify.breakpoint.name"  href="/">Ordbøkene</a></h1>
-      <p class="sub-title"><a href="/">{{$t("sub-title")}}</a></p>
+      <p tabindex="-1" class="sub-title"><a href="/">{{$t("sub-title")}}</a></p>
     </div>
    
     <router-view></router-view>