Make interface responsive

web/templates/add-user.html

@@ -2,7 +2,7 @@
 <h2>Neuer Benutzer</h2>
 
 <form>
-    <div class="grid grid-cols-3 gap-4">
+    <div class="grid grid-cols-1 sm:grid-cols-2 md:grid-cols-3 gap-4">
         <div>
             <label for="username">Benutzername</label>
             <input class="w-full" required name="username" type="text" value="{{.UserName}}" />
@@ -25,7 +25,7 @@
         </div>
     </div>
 
-    <div class="flex gap-4">
+    <div class="flex flex-wrap gap-4">
         <div>
             <input required id="author" name="role" type="radio" value="3" {{if eq .Role 3 }}checked{{end}} />
             <label for="author">Autor</label>