use tile prop

src/components/ArticleFooter.vue

 <template>
   <div class="article_footer">
      <v-snackbar center left light 
+                 tile
                  v-model='copy_popup'
                  timeout="2000">
          

src/components/Header.vue

@@ -7,13 +7,13 @@
     <span class="header_group_list" v-if="group_list.length" tabindex="0">{{group_list}}</span>
 
     <span v-if="split_inf" tabindex="0"> (kløyvd infinitiv: <i>-a</i>
-      <v-menu rounded="0" v-model="menu" offset-x max-width="200px">
+      <v-menu tile v-model="menu" offset-x max-width="200px">
         <template v-slot:activator="{ on, attrs }">
           <v-btn aria-label="Mer informasjon om kløyvd infinitiv" x-small icon v-on="on" v-bind="attrs" class="info-button">
             <v-icon color="primary" size="14px">$vuetify.icons.value.info</v-icon>
           </v-btn>
         </template>
-        <v-card rounded="0" class="info-card">
+        <v-card tile class="info-card">
           Dersom du bruker kløyvd infinitiv, skal dette verbet ha <i>-a</i> i infinitiv. Les meir
           <a target="_blank" href="https://www.sprakradet.no/svardatabase/sporsmal-og-svar/kloyvd-infinitiv-/">her</a>.
         </v-card>