Styling Updates

Server/Components/Pages/InvoiceListPage.razor

@@ -5,9 +5,11 @@
 
 <h3>Rechnungen (@((Invoices ?? []).Count))</h3>
 
+<a href="/create" class="btn btn-primary">Neue Rechnung</a>
+<hr />
+<div class="row">
 @foreach (var invoice in Invoices ?? [])
 {
-  <div class="row">
     <div class="col-md-auto pt-3">
       <div class="card" style="width: 18rem;">
         <div class="card-body">
@@ -26,5 +28,5 @@
         </div>
       </div>
     </div>
-  </div>
-}
+}
+</div>