diff --git a/FoodsharingSiegen.Server/Auth/AuthService.cs b/FoodsharingSiegen.Server/Auth/AuthService.cs
index 6472c26..223f62d 100644
--- a/FoodsharingSiegen.Server/Auth/AuthService.cs
+++ b/FoodsharingSiegen.Server/Auth/AuthService.cs
@@ -139,7 +139,7 @@ namespace FoodsharingSiegen.Server.Auth
                 return new OperationResult();
             }
 
-            return new OperationResult(new Exception("Invalid"));
+            return new OperationResult(new Exception("Benutzername oder Passwort falsch"));
         }
 
         #endregion
diff --git a/FoodsharingSiegen.Server/Controls/InteractionRow.razor b/FoodsharingSiegen.Server/Controls/InteractionRow.razor
index 2123d94..1eed3c0 100644
--- a/FoodsharingSiegen.Server/Controls/InteractionRow.razor
+++ b/FoodsharingSiegen.Server/Controls/InteractionRow.razor
@@ -59,17 +59,17 @@
             foreach (var interaction in Interactions)
             {
                 <div>
-                    @interaction.User.Name (@interaction.Date.ToShortDateString())
+                    <span title="@interaction.User.Memo">@interaction.User.Name</span> (@interaction.Date.ToShortDateString())
                     @if (!string.IsNullOrWhiteSpace(interaction.Info))
                     {
                         <span>(<i>@interaction.Info</i>)</span>
                     }
-                    
+
                     @if ((!Prospect.Complete || interaction.Type == InteractionType.Complete) && AllowAddInteraction)
                     {
                         <span>&nbsp;<a href=""><i class="fa-solid fa-square-xmark" @onclick="async () => await RemoveClick.InvokeAsync(interaction.Id)" @onclick:preventDefault></i></a></span>
                     }
-                    
+
                 </div>
             }
         }
diff --git a/FoodsharingSiegen.Server/FoodsharingSiegen.Server.csproj b/FoodsharingSiegen.Server/FoodsharingSiegen.Server.csproj
index e6f2197..c9e5e44 100644
--- a/FoodsharingSiegen.Server/FoodsharingSiegen.Server.csproj
+++ b/FoodsharingSiegen.Server/FoodsharingSiegen.Server.csproj
@@ -11,12 +11,19 @@
       <ProjectReference Include="..\FoodsharingSiegen.Shared\FoodsharingSiegen.Shared.csproj" />
     </ItemGroup>
 
+    <PropertyGroup>
+        <LibSassOutputStyle>expanded</LibSassOutputStyle>
+        <LibSassOutputLevel>verbose</LibSassOutputLevel>
+        <LibSassMessageLevel>High</LibSassMessageLevel>
+    </PropertyGroup>
+    
     <ItemGroup>
       <PackageReference Include="Blazorise.DataGrid" Version="1.0.2" />
       <PackageReference Include="Blazorise.Snackbar" Version="1.0.2" />
       <PackageReference Include="Blazorise.Icons.Material" Version="1.0.2" />
       <PackageReference Include="Blazorise.Components" Version="1.0.2" />
       <PackageReference Include="Blazorise.Material" Version="1.0.2" />
+      <PackageReference Include="LibSassBuilder" Version="2.0.1" />
       <PackageReference Include="Microsoft.EntityFrameworkCore" Version="6.0.1" />
       <PackageReference Include="Microsoft.EntityFrameworkCore.Design" Version="6.0.1">
         <PrivateAssets>all</PrivateAssets>
diff --git a/FoodsharingSiegen.Server/Pages/AuditView.razor b/FoodsharingSiegen.Server/Pages/AuditView.razor
index 3b9f1ad..4030a53 100644
--- a/FoodsharingSiegen.Server/Pages/AuditView.razor
+++ b/FoodsharingSiegen.Server/Pages/AuditView.razor
@@ -9,7 +9,7 @@
 
 <PageTitle>Aktivitäten</PageTitle>
 
-<h4>Aktivitäten</h4>
+<h2>Aktivitäten</h2>
 
 <DataGrid TItem="Audit"
           Data="@Audits"
diff --git a/FoodsharingSiegen.Server/Pages/Profile.razor b/FoodsharingSiegen.Server/Pages/Profile.razor
index 37c3d0a..7f7f861 100644
--- a/FoodsharingSiegen.Server/Pages/Profile.razor
+++ b/FoodsharingSiegen.Server/Pages/Profile.razor
@@ -8,7 +8,9 @@
 <PageTitle>Profil</PageTitle>
 
 <div style="width: 100%; max-width: 500px;">
-    <h4>Mein Profil</h4>
+    
+    <h2>Mein Profil</h2>
+    
     <Button Color="Color.Primary" Clicked="SaveProfile">Speichern</Button>
     <Fields Class="my-3">
         <Validations @ref="ValidationsRef">
@@ -24,7 +26,7 @@
                 <Field ColumnSize="ColumnSize.Is12">
                     <FieldLabel>Info über dich</FieldLabel>
                     <FieldBody>
-                        <MemoEdit Rows="3" Placeholder="z.B. Bieb bei Rewe Musterhausen" @bind-Text="User.Memo" />
+                        <MemoEdit Rows="3" Placeholder="z.B. Bieb bei Rewe Musterhausen" @bind-Text="User.Memo"/>
                     </FieldBody>
                 </Field>
             </Validation>
diff --git a/FoodsharingSiegen.Server/Pages/Prospects.razor b/FoodsharingSiegen.Server/Pages/Prospects.razor
index 0f844ac..ff156f8 100644
--- a/FoodsharingSiegen.Server/Pages/Prospects.razor
+++ b/FoodsharingSiegen.Server/Pages/Prospects.razor
@@ -11,7 +11,7 @@
 
 <PageTitle>Einarbeitungen</PageTitle>
 
-<h4>Aktuelle Einarbeitungen</h4>
+<h2>Aktuelle Einarbeitungen</h2>
 
 <Button
     Color="Color.Primary"
@@ -26,7 +26,7 @@
 {
     <hr />
     <h4>Aktuell:</h4>
-    <div class="row">
+    <div class="row m-0">
         <Repeater Items="@activeProspects">
             <ProspectContainer Prospect="context" InteractionModal="InteractionModal" ProspectModal="ProspectModal" RemoveInteraction="@RemoveInteraction"></ProspectContainer>
         </Repeater>
@@ -41,7 +41,7 @@
 {
     <hr />
     <h4>Abgeschlossen:</h4>
-    <div class="row">
+    <div class="row m-0">
         <Repeater Items="@completedProspects">
             <ProspectContainer Prospect="context" InteractionModal="InteractionModal" ProspectModal="ProspectModal" RemoveInteraction="@RemoveInteraction"></ProspectContainer>
         </Repeater>
diff --git a/FoodsharingSiegen.Server/Pages/Users.razor b/FoodsharingSiegen.Server/Pages/Users.razor
index ac27e2d..0d2b397 100644
--- a/FoodsharingSiegen.Server/Pages/Users.razor
+++ b/FoodsharingSiegen.Server/Pages/Users.razor
@@ -41,7 +41,7 @@
           @bind-SelectedRow="SelectedUser"
           RowDoubleClicked="arg => UserDataGrid.Edit(arg.Item)"
           Editable
-          Responsive>
+          Responsive="true">
     <DataGridColumns>
         <DataGridCommandColumn TItem="User" Width="100px" CellClass="@(_ => "px-0 d-flex align-items-center justify-content-center")">
             <NewCommandTemplate>
diff --git a/FoodsharingSiegen.Server/Shared/NavMenu.razor b/FoodsharingSiegen.Server/Shared/NavMenu.razor
index 70b1dd9..08a8ad9 100644
--- a/FoodsharingSiegen.Server/Shared/NavMenu.razor
+++ b/FoodsharingSiegen.Server/Shared/NavMenu.razor
@@ -1,9 +1,6 @@
 <div class="top-row ps-3 navbar navbar-dark">
     <div class="container-fluid">
         <a class="navbar-brand" href="">Foodsharing Siegen</a>
-        <button title="Navigation menu" class="navbar-toggler" @onclick="ToggleNavMenu">
-            <span class="navbar-toggler-icon"></span>
-        </button>
     </div>
 </div>
 
diff --git a/FoodsharingSiegen.Server/Shared/NavMenu.razor.css b/FoodsharingSiegen.Server/Shared/NavMenu.razor.css
index b7970aa..cae2731 100644
--- a/FoodsharingSiegen.Server/Shared/NavMenu.razor.css
+++ b/FoodsharingSiegen.Server/Shared/NavMenu.razor.css
@@ -1,62 +1,61 @@
 .navbar-toggler {
-    background-color: rgba(255, 255, 255, 0.1);
+  background-color: rgba(255, 255, 255, 0.1);
 }
 
 .top-row {
-    height: 3.5rem;
-    background-color: rgba(0,0,0,0.4);
+  height: 60px;
+  background-color: rgba(0, 0, 0, 0.4);
 }
 
 .navbar-brand {
-    font-size: 1.1rem;
+  font-size: 1.1rem;
 }
 
 .oi {
-    width: 2rem;
-    font-size: 1.1rem;
-    vertical-align: text-top;
-    top: -2px;
+  width: 2rem;
+  font-size: 1.1rem;
+  vertical-align: text-top;
+  top: -2px;
 }
 
 .nav-item {
-    font-size: 0.9rem;
-    padding-bottom: 0.5rem;
+  font-size: 0.9rem;
+  padding-bottom: 0.5rem;
 }
 
-    .nav-item:first-of-type {
-        padding-top: 1rem;
-    }
+.nav-item:first-of-type {
+  padding-top: 1rem;
+}
 
-    .nav-item:last-of-type {
-        padding-bottom: 1rem;
-    }
+.nav-item:last-of-type {
+  padding-bottom: 1rem;
+}
 
-    .nav-item ::deep a {
-        color: #533a20;
-        border-radius: 4px;
-        height: 3rem;
-        display: flex;
-        align-items: center;
-        line-height: 3rem;
-    }
+.nav-item ::deep a {
+  color: #533a20;
+  border-radius: 4px;
+  height: 3rem;
+  display: flex;
+  align-items: center;
+  line-height: 3rem;
+}
 
 .nav-item ::deep a.active {
-    background-color: rgba(255,255,255,0.25);
-    color: #64ae24;
+  background-color: rgba(255, 255, 255, 0.25);
+  color: #64ae24;
 }
 
 .nav-item ::deep a:hover {
-    background-color: rgba(255,255,255,0.1);
-    color: #64ae24;
+  background-color: rgba(255, 255, 255, 0.1);
+  color: #64ae24;
 }
 
 @media (min-width: 641px) {
-    .navbar-toggler {
-        display: none;
-    }
-
-    .collapse {
-        /* Never collapse the sidebar for wide screens */
-        display: block;
-    }
+  .navbar-toggler {
+    display: none;
+  }
+  .collapse {
+    /* Never collapse the sidebar for wide screens */
+    display: block;
+  }
 }
diff --git a/FoodsharingSiegen.Server/Shared/NavMenu.razor.scss b/FoodsharingSiegen.Server/Shared/NavMenu.razor.scss
new file mode 100644
index 0000000..3ba4c1b
--- /dev/null
+++ b/FoodsharingSiegen.Server/Shared/NavMenu.razor.scss
@@ -0,0 +1,62 @@
+.navbar-toggler {
+    background-color: rgba(255, 255, 255, 0.1);
+}
+
+.top-row {
+    height: 60px;
+    background-color: rgba(0,0,0,0.4);
+}
+
+.navbar-brand {
+    font-size: 1.1rem;
+}
+
+.oi {
+    width: 2rem;
+    font-size: 1.1rem;
+    vertical-align: text-top;
+    top: -2px;
+}
+
+.nav-item {
+    font-size: 0.9rem;
+    padding-bottom: 0.5rem;
+}
+
+    .nav-item:first-of-type {
+        padding-top: 1rem;
+    }
+
+    .nav-item:last-of-type {
+        padding-bottom: 1rem;
+    }
+
+    .nav-item ::deep a {
+        color: #533a20;
+        border-radius: 4px;
+        height: 3rem;
+        display: flex;
+        align-items: center;
+        line-height: 3rem;
+    }
+
+.nav-item ::deep a.active {
+    background-color: rgba(255,255,255,0.25);
+    color: #64ae24;
+}
+
+.nav-item ::deep a:hover {
+    background-color: rgba(255,255,255,0.1);
+    color: #64ae24;
+}
+
+@media (min-width: 641px) {
+    .navbar-toggler {
+        display: none;
+    }
+
+    .collapse {
+        /* Never collapse the sidebar for wide screens */
+        display: block;
+    }
+}