diff --git a/Application/FeedCenter.csproj b/Application/FeedCenter.csproj
index 98e4097..5214a5f 100644
--- a/Application/FeedCenter.csproj
+++ b/Application/FeedCenter.csproj
@@ -126,7 +126,7 @@
   <ItemGroup>
     <PackageReference Include="ChrisKaczor.ApplicationUpdate" Version="1.0.2" />
     <PackageReference Include="ChrisKaczor.GenericSettingsProvider" Version="1.0.3" />
-    <PackageReference Include="ChrisKaczor.InstalledBrowsers" Version="1.0.2" />
+    <PackageReference Include="ChrisKaczor.InstalledBrowsers" Version="1.0.3" />
     <PackageReference Include="ChrisKaczor.Wpf.Application.SingleInstance" Version="1.0.4" />
     <PackageReference Include="ChrisKaczor.Wpf.Application.StartWithWindows" Version="1.0.2" />
     <PackageReference Include="ChrisKaczor.Wpf.Controls.HtmlTextBlock" Version="1.0.2" />
@@ -139,10 +139,11 @@
     <PackageReference Include="DebounceThrottle" Version="2.0.0" />
     <PackageReference Include="HtmlAgilityPack" Version="1.11.46" />
     <PackageReference Include="HtmlTextWriter" Version="2.1.1" />
+    <PackageReference Include="MahApps.Metro" Version="2.4.9" />
     <PackageReference Include="Microsoft.SqlServer.Compact" Version="4.0.8876.1" GeneratePathProperty="true">
       <NoWarn>NU1701</NoWarn>
     </PackageReference>
-    <PackageReference Include="Microsoft.Windows.Compatibility" Version="7.0.0" />
+    <PackageReference Include="Microsoft.Windows.Compatibility" Version="7.0.1" />
     <PackageReference Include="NameBasedGrid" Version="0.10.1">
       <NoWarn>NU1701</NoWarn>
     </PackageReference>
diff --git a/Application/Options/AboutOptionsPanel.xaml b/Application/Options/AboutOptionsPanel.xaml
index 269c270..5c19da3 100644
--- a/Application/Options/AboutOptionsPanel.xaml
+++ b/Application/Options/AboutOptionsPanel.xaml
@@ -4,21 +4,18 @@
                           xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
                           xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
                           xmlns:options="clr-namespace:FeedCenter.Options"
+                          xmlns:properties="clr-namespace:FeedCenter.Properties"
+                          xmlns:applicationUpdate="clr-namespace:ChrisKaczor.ApplicationUpdate;assembly=ChrisKaczor.ApplicationUpdate"
                           mc:Ignorable="d"
-                          d:DesignHeight="300"
+                          d:DesignHeight="150"
                           d:DesignWidth="300">
     <Grid>
-        <TextBlock Text="Label"
-                   Name="ApplicationNameLabel"
-                   VerticalAlignment="Top"
-                   FontWeight="Bold" />
-        <TextBlock Text="Label"
-                   Margin="0,22,0,0"
-                   Name="VersionLabel"
-                   VerticalAlignment="Top" />
-        <TextBlock Text="Label"
-                   Margin="0,44,0,0"
-                   Name="CompanyLabel"
-                   VerticalAlignment="Top" />
+        <StackPanel options:Spacing.Vertical="10">
+            <TextBlock Text="{x:Static properties:Resources.ApplicationDisplayName}"
+                       FontWeight="Bold" />
+            <TextBlock Text="{Binding Source={x:Static applicationUpdate:UpdateCheck.LocalVersion}, StringFormat={x:Static properties:Resources.Version}}"
+                       Name="VersionLabel" />
+            <TextBlock Text="Chris Kaczor" />
+        </StackPanel>
     </Grid>
-</options:OptionsPanelBase>
+</options:OptionsPanelBase>
\ No newline at end of file
diff --git a/Application/Options/AboutOptionsPanel.xaml.cs b/Application/Options/AboutOptionsPanel.xaml.cs
index 4d27702..3f46b03 100644
--- a/Application/Options/AboutOptionsPanel.xaml.cs
+++ b/Application/Options/AboutOptionsPanel.xaml.cs
@@ -1,6 +1,4 @@
-using System.Reflection;
-using System.Windows;
-using ChrisKaczor.ApplicationUpdate;
+using System.Windows;
 
 namespace FeedCenter.Options;
 
@@ -12,16 +10,4 @@ public partial class AboutOptionsPanel
     }
 
     public override string CategoryName => Properties.Resources.optionCategoryAbout;
-
-    public override void LoadPanel()
-    {
-        base.LoadPanel();
-
-        ApplicationNameLabel.Text = Properties.Resources.ApplicationDisplayName;
-
-        var version = UpdateCheck.LocalVersion.ToString();
-        VersionLabel.Text = string.Format(Properties.Resources.Version, version);
-
-        CompanyLabel.Text = ((AssemblyCompanyAttribute) Assembly.GetEntryAssembly().GetCustomAttributes(typeof(AssemblyCompanyAttribute), false)[0]).Company;
-    }
 }
\ No newline at end of file
diff --git a/Application/Options/CategoryWindow.xaml b/Application/Options/CategoryWindow.xaml
index 5500ef5..150973e 100644
--- a/Application/Options/CategoryWindow.xaml
+++ b/Application/Options/CategoryWindow.xaml
@@ -7,6 +7,7 @@
         mc:Ignorable="d"
         xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
         xmlns:controls="clr-namespace:ChrisKaczor.Wpf.Windows;assembly=ChrisKaczor.Wpf.Windows.ControlBox"
+        xmlns:mah="http://metro.mahapps.com/winfx/xaml/controls"
         d:DataContext="{d:DesignInstance Type=feedCenter:Category}"
         Title="CategoryWindow"
         Width="300"
@@ -17,7 +18,17 @@
         FocusManager.FocusedElement="{Binding ElementName=NameTextBox}"
         controls:ControlBox.HasMinimizeButton="False"
         controls:ControlBox.HasMaximizeButton="False">
-    <Grid Margin="6,3,6,6">
+    <Window.Resources>
+        <ResourceDictionary>
+            <ResourceDictionary.MergedDictionaries>
+                <ResourceDictionary Source="pack://application:,,,/MahApps.Metro;component/Styles/Controls.xaml" />
+                <ResourceDictionary Source="pack://application:,,,/MahApps.Metro;component/Styles/Fonts.xaml" />
+                <ResourceDictionary Source="pack://application:,,,/MahApps.Metro;component/Styles/Controls.FlatButton.xaml" />
+                <ResourceDictionary Source="pack://application:,,,/MahApps.Metro;component/Styles/Themes/light.cobalt.xaml" />
+            </ResourceDictionary.MergedDictionaries>
+        </ResourceDictionary>
+    </Window.Resources>
+    <Grid Margin="6">
         <Grid.RowDefinitions>
             <RowDefinition Height="Auto" />
             <RowDefinition Height="*" />
@@ -25,15 +36,13 @@
         <Grid.ColumnDefinitions>
             <ColumnDefinition Width="*" />
         </Grid.ColumnDefinitions>
-        <StackPanel 
-            Grid.Row="0" 
+        <StackPanel
+            Grid.Row="0"
             Grid.Column="0">
-            <Label Content="{x:Static properties:Resources.categoryNameLabel}"
-                   Padding="0"
-                   Margin="0,0,0,1"
-                   Target="{Binding ElementName=NameTextBox}" />
             <TextBox Name="NameTextBox"
                      VerticalAlignment="Center"
+                     mah:TextBoxHelper.UseFloatingWatermark="True"
+                     mah:TextBoxHelper.Watermark="{x:Static properties:Resources.categoryNameLabel}"
                      Text="{Binding Path=Name, UpdateSourceTrigger=Explicit, ValidatesOnExceptions=True}">
             </TextBox>
         </StackPanel>
@@ -44,7 +53,6 @@
             Margin="0,5,0,0"
             HorizontalAlignment="Right">
             <Button Content="{x:Static properties:Resources.OkayButton}"
-                    Height="23"
                     HorizontalAlignment="Right"
                     VerticalAlignment="Bottom"
                     Width="75"
@@ -52,7 +60,6 @@
                     IsDefault="True"
                     Click="HandleOkayButtonClick" />
             <Button Content="{x:Static properties:Resources.CancelButton}"
-                    Height="23"
                     HorizontalAlignment="Right"
                     VerticalAlignment="Bottom"
                     Width="75"
diff --git a/Application/Options/DisplayOptionsPanel.xaml b/Application/Options/DisplayOptionsPanel.xaml
index 6d1453c..a2e6d47 100644
--- a/Application/Options/DisplayOptionsPanel.xaml
+++ b/Application/Options/DisplayOptionsPanel.xaml
@@ -5,61 +5,38 @@
                           xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
                           xmlns:options="clr-namespace:FeedCenter.Options"
                           xmlns:properties="clr-namespace:FeedCenter.Properties"
+                          xmlns:mah="http://metro.mahapps.com/winfx/xaml/controls"
                           mc:Ignorable="d"
-                          d:DesignHeight="300"
-                          d:DesignWidth="300">
-    <Grid>
-        <Grid.ColumnDefinitions>
-            <ColumnDefinition Width="Auto" />
-            <ColumnDefinition Width="*" />
-        </Grid.ColumnDefinitions>
+                          d:DesignHeight="150"
+                          d:DesignWidth="400">
+    <StackPanel options:Spacing.Vertical="8">
         <CheckBox Content="{x:Static properties:Resources.lockWindowCheckBox}"
-                  Height="16"
-                  HorizontalAlignment="Left"
                   Name="LockWindowCheckBox"
-                  VerticalAlignment="Top"
-                  Width="300"
-                  Grid.ColumnSpan="2"
-                  Click="LockWindowCheckBox_Click" />
+                  IsChecked="{Binding Source={x:Static properties:Settings.Default}, Path=WindowLocked}"
+                  Click="OnSaveSettings" />
         <CheckBox Content="{x:Static properties:Resources.displayEmptyFeedsCheckBox}"
-                  Height="16"
-                  HorizontalAlignment="Left"
-                  Margin="0,22,0,0"
                   Name="DisplayEmptyFeedsCheckBox"
-                  VerticalAlignment="Top"
-                  Width="300"
-                  Grid.ColumnSpan="2"
-                  Grid.Column="0"
-                  Click="DisplayEmptyFeedsCheckBox_Click" />
-        <Label Grid.Column="0"
-               Content="{x:Static properties:Resources.toolbarLocationLabel}"
-               VerticalAlignment="Top"
-               Margin="0,50,0,0"
-               Padding="0,5,5,5"
-               Target="{Binding ElementName=ToolbarLocationComboBox}"
-               Width="97" />
-        <ComboBox Margin="8,53,0,0"
-                  Name="ToolbarLocationComboBox"
-                  VerticalAlignment="Top"
-                  Grid.Column="1"
-                  SelectionChanged="ToolbarLocationComboBox_SelectionChanged">
+                  IsChecked="{Binding Source={x:Static properties:Settings.Default}, Path=DisplayEmptyFeeds}"
+                  Click="OnSaveSettings" />
+        <ComboBox
+            Name="ToolbarLocationComboBox"
+            mah:TextBoxHelper.UseFloatingWatermark="True"
+            mah:TextBoxHelper.Watermark="{x:Static properties:Resources.toolbarLocationLabel}"
+            SelectedValue="{Binding Source={x:Static properties:Settings.Default}, Path=ToolbarLocation}"
+            SelectedValuePath="Tag"
+            SelectionChanged="OnSaveSettings">
             <ComboBoxItem Content="{x:Static properties:Resources.Top}"
                           Tag="{x:Static Dock.Top}" />
             <ComboBoxItem Content="{x:Static properties:Resources.Bottom}"
                           Tag="{x:Static Dock.Bottom}" />
         </ComboBox>
-        <Label Grid.Column="0"
-               Content="{x:Static properties:Resources.multipleLineDisplayLabel}"
-               VerticalAlignment="Top"
-               Margin="0,82,0,0"
-               Padding="0,5,5,5"
-               Target="{Binding ElementName=MultipleLineDisplayComboBox}"
-               Width="97" />
-        <ComboBox Margin="8,86,0,0"
-                  Name="MultipleLineDisplayComboBox"
-                  VerticalAlignment="Top"
-                  Grid.Column="1"
-                  SelectionChanged="MultipleLineDisplayComboBox_SelectionChanged">
+        <ComboBox
+            Name="MultipleLineDisplayComboBox"
+            mah:TextBoxHelper.UseFloatingWatermark="True"
+            mah:TextBoxHelper.Watermark="{x:Static properties:Resources.multipleLineDisplayLabel}"
+            SelectedValue="{Binding Source={x:Static properties:Settings.Default}, Path=MultipleLineDisplay}"
+            SelectedValuePath="Tag"
+            SelectionChanged="OnSaveSettings">
             <ComboBoxItem Content="{x:Static properties:Resources.multipleLineDisplayNormal}"
                           Tag="{x:Static options:MultipleLineDisplay.Normal}" />
             <ComboBoxItem Content="{x:Static properties:Resources.multipleLineDisplaySingleLine}"
@@ -67,5 +44,5 @@
             <ComboBoxItem Content="{x:Static properties:Resources.multipleLineDisplayFirstLine}"
                           Tag="{x:Static options:MultipleLineDisplay.FirstLine}" />
         </ComboBox>
-    </Grid>
+    </StackPanel>
 </options:OptionsPanelBase>
\ No newline at end of file
diff --git a/Application/Options/DisplayOptionsPanel.xaml.cs b/Application/Options/DisplayOptionsPanel.xaml.cs
index a0a6982..c278014 100644
--- a/Application/Options/DisplayOptionsPanel.xaml.cs
+++ b/Application/Options/DisplayOptionsPanel.xaml.cs
@@ -1,7 +1,5 @@
-using System.Linq;
+using FeedCenter.Properties;
 using System.Windows;
-using System.Windows.Controls;
-using FeedCenter.Properties;
 
 namespace FeedCenter.Options;
 
@@ -18,43 +16,18 @@ public partial class DisplayOptionsPanel
     {
         base.LoadPanel();
 
-        LockWindowCheckBox.IsChecked = Settings.Default.WindowLocked;
-        DisplayEmptyFeedsCheckBox.IsChecked = Settings.Default.DisplayEmptyFeeds;
-        ToolbarLocationComboBox.SelectedItem = ToolbarLocationComboBox.Items.Cast<ComboBoxItem>().First(comboBoxItem => (Dock) comboBoxItem.Tag == Settings.Default.ToolbarLocation);
-        MultipleLineDisplayComboBox.SelectedItem = MultipleLineDisplayComboBox.Items.Cast<ComboBoxItem>().First(comboBoxItem => (MultipleLineDisplay) comboBoxItem.Tag == Settings.Default.MultipleLineDisplay);
-
         MarkLoaded();
     }
 
-    private void LockWindowCheckBox_Click(object sender, System.Windows.RoutedEventArgs e)
+    private void OnSaveSettings(object sender, RoutedEventArgs e)
     {
-        if (!HasLoaded) return;
-
-        if (LockWindowCheckBox.IsChecked.HasValue && Settings.Default.WindowLocked != LockWindowCheckBox.IsChecked.Value)
-            Settings.Default.WindowLocked = LockWindowCheckBox.IsChecked.Value;
+        SaveSettings();
     }
 
-    private void DisplayEmptyFeedsCheckBox_Click(object sender, System.Windows.RoutedEventArgs e)
+    private void SaveSettings()
     {
         if (!HasLoaded) return;
 
-        if (DisplayEmptyFeedsCheckBox.IsChecked.HasValue && Settings.Default.DisplayEmptyFeeds != DisplayEmptyFeedsCheckBox.IsChecked.Value)
-            Settings.Default.DisplayEmptyFeeds = DisplayEmptyFeedsCheckBox.IsChecked.Value;
-    }
-
-    private void ToolbarLocationComboBox_SelectionChanged(object sender, SelectionChangedEventArgs e)
-    {
-        if (!HasLoaded) return;
-
-        var dock = (Dock) ((ComboBoxItem) ToolbarLocationComboBox.SelectedItem).Tag;
-        Settings.Default.ToolbarLocation = dock;
-    }
-
-    private void MultipleLineDisplayComboBox_SelectionChanged(object sender, SelectionChangedEventArgs e)
-    {
-        if (!HasLoaded) return;
-
-        var multipleLineDisplay = (MultipleLineDisplay) ((ComboBoxItem) MultipleLineDisplayComboBox.SelectedItem).Tag;
-        Settings.Default.MultipleLineDisplay = multipleLineDisplay;
+        Settings.Default.Save();
     }
 }
\ No newline at end of file
diff --git a/Application/Options/FeedWindow.xaml b/Application/Options/FeedWindow.xaml
index bd8016f..b2c2edd 100644
--- a/Application/Options/FeedWindow.xaml
+++ b/Application/Options/FeedWindow.xaml
@@ -13,6 +13,16 @@
         WindowStartupLocation="CenterOwner"
         Icon="/FeedCenter;component/Resources/Application.ico"
         FocusManager.FocusedElement="{Binding ElementName=UrlTextBox}">
+    <Window.Resources>
+        <ResourceDictionary>
+            <ResourceDictionary.MergedDictionaries>
+                <ResourceDictionary Source="pack://application:,,,/MahApps.Metro;component/Styles/Controls.xaml" />
+                <ResourceDictionary Source="pack://application:,,,/MahApps.Metro;component/Styles/Fonts.xaml" />
+                <ResourceDictionary Source="pack://application:,,,/MahApps.Metro;component/Styles/Controls.FlatButton.xaml" />
+                <ResourceDictionary Source="pack://application:,,,/MahApps.Metro;component/Styles/Themes/light.cobalt.xaml" />
+            </ResourceDictionary.MergedDictionaries>
+        </ResourceDictionary>
+    </Window.Resources>
     <Grid>
         <TabControl Name="OptionsTabControl"
                     Margin="12,12,12,41">
diff --git a/Application/Options/FeedsOptionsPanel.xaml b/Application/Options/FeedsOptionsPanel.xaml
index f070f43..62b5c9a 100644
--- a/Application/Options/FeedsOptionsPanel.xaml
+++ b/Application/Options/FeedsOptionsPanel.xaml
@@ -29,6 +29,8 @@
                   CanUserResizeRows="False"
                   IsReadOnly="True"
                   HeadersVisibility="Column"
+                  BorderThickness="1,1,1,1"
+                  BorderBrush="{DynamicResource {x:Static SystemColors.ActiveBorderBrushKey}}"
                   Background="{x:Null}"
                   PreviewMouseLeftButtonDown="HandleFeedListPreviewMouseLeftButtonDown" SelectionChanged="FeedListBox_SelectionChanged">
             <DataGrid.Columns>
@@ -48,12 +50,6 @@
                                  Handler="HandleListBoxItemPreviewMouseMove" />
                 </Style>
             </DataGrid.ItemContainerStyle>
-            <DataGrid.CellStyle>
-                <Style TargetType="DataGridCell">
-                    <Setter Property="BorderThickness"
-                            Value="0" />
-                </Style>
-            </DataGrid.CellStyle>
         </DataGrid>
         <DataGrid Name="CategoryListBox"
                   SelectionChanged="HandleCategoryListBoxSelectionChanged"
@@ -65,6 +61,8 @@
                   CanUserResizeRows="False"
                   IsReadOnly="True"
                   HeadersVisibility="Column"
+                  BorderThickness="1,1,1,1"
+                  BorderBrush="{DynamicResource {x:Static SystemColors.ActiveBorderBrushKey}}"
                   AllowDrop="True"
                   Background="{x:Null}" 
                   d:DataContext="{d:DesignInstance Type=feedCenter:Category }">
@@ -86,12 +84,6 @@
                                  Handler="CategoryListBox_MouseDoubleClick" />
                 </Style>
             </DataGrid.ItemContainerStyle>
-            <DataGrid.CellStyle>
-                <Style TargetType="DataGridCell">
-                    <Setter Property="BorderThickness"
-                            Value="0" />
-                </Style>
-            </DataGrid.CellStyle>
         </DataGrid>
         <Border Grid.Column="2"
                 Grid.Row="1"
diff --git a/Application/Options/GeneralOptionsPanel.xaml b/Application/Options/GeneralOptionsPanel.xaml
index a88c84a..1f304d9 100644
--- a/Application/Options/GeneralOptionsPanel.xaml
+++ b/Application/Options/GeneralOptionsPanel.xaml
@@ -5,54 +5,33 @@
                           xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
                           xmlns:options="clr-namespace:FeedCenter.Options"
                           xmlns:properties="clr-namespace:FeedCenter.Properties"
+                          xmlns:mah="http://metro.mahapps.com/winfx/xaml/controls"
+                          xmlns:installedBrowsers="clr-namespace:ChrisKaczor.InstalledBrowsers;assembly=ChrisKaczor.InstalledBrowsers"
                           mc:Ignorable="d"
                           d:DesignHeight="300"
                           d:DesignWidth="300">
-    <Grid>
-        <Grid.RowDefinitions>
-            <RowDefinition Height="Auto" />
-            <RowDefinition Height="15" />
-            <RowDefinition Height="Auto" />
-            <RowDefinition Height="5" />
-            <RowDefinition Height="Auto" />
-            <RowDefinition Height="*" />
-        </Grid.RowDefinitions>
-        <Grid.ColumnDefinitions>
-            <ColumnDefinition Width="Auto" />
-            <ColumnDefinition Width="*" />
-        </Grid.ColumnDefinitions>
+    <StackPanel options:Spacing.Vertical="10">
         <CheckBox Content="{x:Static properties:Resources.startWithWindowsCheckBox}"
                   Name="StartWithWindowsCheckBox"
-                  VerticalAlignment="Top"
-                  VerticalContentAlignment="Center"
-                  Margin="0,5"
-                  Grid.ColumnSpan="2"
-                  Click="StartWithWindowsCheckBox_Click" />
-        <Label Content="{x:Static properties:Resources.defaultBrowserLabel}"
-               Target="{Binding ElementName=BrowserComboBox}"
-               Grid.Column="0"
-               Grid.Row="2"
-               Padding="0"
-               VerticalContentAlignment="Center"
-               Margin="0,0,5,0" />
+                  IsChecked="{Binding Source={x:Static properties:Settings.Default}, Path=StartWithWindows}"
+                  Click="OnSaveSettings" />
         <ComboBox Name="BrowserComboBox"
-                  Grid.Row="2"
-                  Grid.Column="1"
-                  VerticalContentAlignment="Center"
-                  SelectionChanged="BrowserComboBox_SelectionChanged">
-        </ComboBox>
-        <Label Content="{x:Static properties:Resources.defaultUserAgentLabel}"
-               Target="{Binding ElementName=BrowserComboBox}"
-               Grid.Column="0"
-               Grid.Row="4"
-               Padding="0"
-               VerticalContentAlignment="Center"
-               Margin="0,0,5,0" />
+                  mah:TextBoxHelper.UseFloatingWatermark="True"
+                  mah:TextBoxHelper.Watermark="{x:Static properties:Resources.defaultBrowserLabel}"
+                  d:DataContext="{d:DesignInstance Type=installedBrowsers:InstalledBrowser}"
+                  DisplayMemberPath="Name"
+                  ItemsSource="{Binding Source={x:Static installedBrowsers:InstalledBrowser.InstalledBrowsers}}"
+                  SelectedValuePath="Key"
+                  SelectedValue="{Binding Source={x:Static properties:Settings.Default}, Path=Browser}"
+                  SelectionChanged="OnSaveSettings" />
         <ComboBox Name="UserAgentComboBox"
-                  Grid.Row="4"
-                  Grid.Column="1"
-                  VerticalContentAlignment="Center"
-                  SelectionChanged="UserAgentComboBox_SelectionChanged">
-        </ComboBox>
-    </Grid>
+                  mah:TextBoxHelper.UseFloatingWatermark="True"
+                  mah:TextBoxHelper.Watermark="{x:Static properties:Resources.defaultUserAgentLabel}"
+                  d:DataContext="{d:DesignInstance Type=options:UserAgentItem}"
+                  DisplayMemberPath="Caption"
+                  ItemsSource="{Binding Source={x:Static options:UserAgentItem.UserAgents}}"
+                  SelectedValuePath="UserAgent"
+                  SelectedValue="{Binding Source={x:Static properties:Settings.Default}, Path=DefaultUserAgent}"
+                  SelectionChanged="OnSaveSettings" />
+    </StackPanel>
 </options:OptionsPanelBase>
\ No newline at end of file
diff --git a/Application/Options/GeneralOptionsPanel.xaml.cs b/Application/Options/GeneralOptionsPanel.xaml.cs
index adf8e37..cfbfa1f 100644
--- a/Application/Options/GeneralOptionsPanel.xaml.cs
+++ b/Application/Options/GeneralOptionsPanel.xaml.cs
@@ -1,8 +1,6 @@
-using ChrisKaczor.InstalledBrowsers;
-using ChrisKaczor.Wpf.Application;
+using ChrisKaczor.Wpf.Application;
+using FeedCenter.Properties;
 using System.Windows;
-using System.Windows.Controls;
-using System.Windows.Controls.Primitives;
 
 namespace FeedCenter.Options;
 
@@ -19,87 +17,20 @@ public partial class GeneralOptionsPanel
     {
         base.LoadPanel();
 
-        var settings = Properties.Settings.Default;
-
-        StartWithWindowsCheckBox.IsChecked = settings.StartWithWindows;
-
-        LoadBrowserComboBox(BrowserComboBox, settings.Browser);
-
-        LoadUserAgentComboBox(UserAgentComboBox, settings.DefaultUserAgent);
-
         MarkLoaded();
     }
 
-    private static void LoadBrowserComboBox(Selector selector, string selected)
+    private void OnSaveSettings(object sender, RoutedEventArgs e)
     {
-        selector.SelectedIndex = 0;
-
-        ComboBoxItem selectedItem = null;
-
-        var browsers = InstalledBrowser.GetInstalledBrowsers(true);
-        foreach (var browser in browsers)
-        {
-            var item = new ComboBoxItem { Content = browser.Value.Name, Tag = browser.Key };
-
-            selector.Items.Add(item);
-
-            if (browser.Key == selected)
-                selectedItem = item;
-        }
-
-        if (selectedItem != null)
-            selector.SelectedItem = selectedItem;
+        SaveSettings();
     }
 
-    private static void LoadUserAgentComboBox(Selector selector, string selected)
-    {
-        selector.SelectedIndex = 0;
-
-        ComboBoxItem selectedItem = null;
-
-        var userAgents = UserAgentItem.GetUserAgents();
-        foreach (var userAgent in userAgents)
-        {
-            var item = new ComboBoxItem { Content = userAgent.Caption, Tag = userAgent.UserAgent };
-
-            selector.Items.Add(item);
-
-            if (userAgent.UserAgent == selected)
-                selectedItem = item;
-        }
-
-        if (selectedItem != null)
-            selector.SelectedItem = selectedItem;
-    }
-
-    private void StartWithWindowsCheckBox_Click(object sender, System.Windows.RoutedEventArgs e)
+    private void SaveSettings()
     {
         if (!HasLoaded) return;
 
-        var settings = Properties.Settings.Default;
+        Settings.Default.Save();
 
-        if (StartWithWindowsCheckBox.IsChecked.HasValue &&
-            settings.StartWithWindows != StartWithWindowsCheckBox.IsChecked.Value)
-            settings.StartWithWindows = StartWithWindowsCheckBox.IsChecked.Value;
-
-        System.Windows.Application.Current.SetStartWithWindows(settings.StartWithWindows);
-    }
-
-    private void BrowserComboBox_SelectionChanged(object sender, SelectionChangedEventArgs e)
-    {
-        if (!HasLoaded) return;
-
-        var settings = Properties.Settings.Default;
-
-        settings.Browser = (string) ((ComboBoxItem) BrowserComboBox.SelectedItem).Tag;
-    }
-
-    private void UserAgentComboBox_SelectionChanged(object sender, SelectionChangedEventArgs e)
-    {
-        if (!HasLoaded) return;
-
-        var settings = Properties.Settings.Default;
-
-        settings.DefaultUserAgent = (string) ((ComboBoxItem) UserAgentComboBox.SelectedItem).Tag;
+        Application.Current.SetStartWithWindows(Settings.Default.StartWithWindows);
     }
 }
\ No newline at end of file
diff --git a/Application/Options/MarginSetter.cs b/Application/Options/MarginSetter.cs
new file mode 100644
index 0000000..1e6a4a9
--- /dev/null
+++ b/Application/Options/MarginSetter.cs
@@ -0,0 +1,73 @@
+using JetBrains.Annotations;
+using System.Windows;
+using System.Windows.Controls;
+
+namespace FeedCenter.Options;
+
+public class MarginSetter
+{
+    private static Thickness GetLastItemMargin(DependencyObject obj)
+    {
+        return (Thickness) obj.GetValue(LastItemMarginProperty);
+    }
+
+    [UsedImplicitly]
+    public static Thickness GetMargin(DependencyObject obj)
+    {
+        return (Thickness) obj.GetValue(MarginProperty);
+    }
+
+    private static void MarginChangedCallback(object sender, DependencyPropertyChangedEventArgs e)
+    {
+        // Make sure this is put on a panel
+        if (sender is not Panel panel)
+            return;
+
+        // Avoid duplicate registrations
+        panel.Loaded -= OnPanelLoaded;
+        panel.Loaded += OnPanelLoaded;
+
+        if (panel.IsLoaded)
+        {
+            OnPanelLoaded(panel, null);
+        }
+    }
+
+    private static void OnPanelLoaded(object sender, RoutedEventArgs e)
+    {
+        var panel = (Panel) sender;
+
+        // Go over the children and set margin for them:
+        for (var i = 0; i < panel.Children.Count; i++)
+        {
+            var child = panel.Children[i];
+
+            if (child is not FrameworkElement fe)
+                continue;
+
+            var isLastItem = i == panel.Children.Count - 1;
+            fe.Margin = isLastItem ? GetLastItemMargin(panel) : GetMargin(panel);
+        }
+    }
+
+    [UsedImplicitly]
+    public static void SetLastItemMargin(DependencyObject obj, Thickness value)
+    {
+        obj.SetValue(LastItemMarginProperty, value);
+    }
+
+    [UsedImplicitly]
+    public static void SetMargin(DependencyObject obj, Thickness value)
+    {
+        obj.SetValue(MarginProperty, value);
+    }
+
+    // Using a DependencyProperty as the backing store for Margin.  This enables animation, styling, binding, etc...
+    public static readonly DependencyProperty MarginProperty =
+        DependencyProperty.RegisterAttached("Margin", typeof(Thickness), typeof(MarginSetter),
+            new UIPropertyMetadata(new Thickness(), MarginChangedCallback));
+
+    public static readonly DependencyProperty LastItemMarginProperty =
+        DependencyProperty.RegisterAttached("LastItemMargin", typeof(Thickness), typeof(MarginSetter),
+            new UIPropertyMetadata(new Thickness(), MarginChangedCallback));
+}
\ No newline at end of file
diff --git a/Application/Options/OptionsWindow.xaml b/Application/Options/OptionsWindow.xaml
index 0792786..36acdbe 100644
--- a/Application/Options/OptionsWindow.xaml
+++ b/Application/Options/OptionsWindow.xaml
@@ -8,21 +8,44 @@
         ResizeMode="CanResize"
         WindowStartupLocation="CenterScreen"
         Icon="/FeedCenter;component/Resources/Application.ico">
+    <Window.Resources>
+        <ResourceDictionary>
+            <ResourceDictionary.MergedDictionaries>
+                <ResourceDictionary Source="pack://application:,,,/MahApps.Metro;component/Styles/Controls.xaml" />
+                <ResourceDictionary Source="pack://application:,,,/MahApps.Metro;component/Styles/Fonts.xaml" />
+                <ResourceDictionary Source="pack://application:,,,/MahApps.Metro;component/Styles/Controls.FlatButton.xaml" />
+                <ResourceDictionary Source="pack://application:,,,/MahApps.Metro;component/Styles/Themes/light.cobalt.xaml" />
+            </ResourceDictionary.MergedDictionaries>
+        </ResourceDictionary>
+    </Window.Resources>
     <Grid>
-        <ListBox HorizontalAlignment="Left"
-                 Name="CategoryListBox"
-                 Width="126"
-                 SelectionChanged="HandleSelectedCategoryChanged"
-                 Margin="12,12,0,41" />
-        <ContentControl Margin="144,12,12,41"
-                        Name="ContentControl"
-                        IsTabStop="False" />
-        <Button Content="{x:Static properties:Resources.CloseButton}"
-                Margin="0,0,12,12"
-                Height="23"
-                VerticalAlignment="Bottom"
-                HorizontalAlignment="Right"
-                Width="75"
-                IsCancel="True" />
+        <Grid.RowDefinitions>
+            <RowDefinition Height="*" />
+            <RowDefinition Height="Auto" />
+        </Grid.RowDefinitions>
+        <Grid.ColumnDefinitions>
+            <ColumnDefinition Width="130" />
+            <ColumnDefinition Width="5" />
+            <ColumnDefinition Width="*" />
+        </Grid.ColumnDefinitions>
+        <ListBox
+            Grid.Column="0"
+            Grid.Row="0"
+            Name="CategoryListBox"
+            SelectionChanged="HandleSelectedCategoryChanged" />
+        <ContentControl
+            Grid.Column="2"
+            Grid.Row="0"
+            Margin="0,6,6,6"
+            Name="ContentControl"
+            IsTabStop="False" />
+        <Button
+            Grid.Row="1"
+            Grid.Column="0"
+            Grid.ColumnSpan="3"
+            Margin="0,6,6,6"
+            Content="{x:Static properties:Resources.CloseButton}"
+            HorizontalAlignment="Right"
+            IsCancel="True" />
     </Grid>
-</Window>
+</Window>
\ No newline at end of file
diff --git a/Application/Options/Spacing.cs b/Application/Options/Spacing.cs
new file mode 100644
index 0000000..b7f7349
--- /dev/null
+++ b/Application/Options/Spacing.cs
@@ -0,0 +1,55 @@
+using JetBrains.Annotations;
+using System.Windows;
+
+namespace FeedCenter.Options
+{
+    public class Spacing
+    {
+        public static double GetHorizontal(DependencyObject obj)
+        {
+            return (double) obj.GetValue(HorizontalProperty);
+        }
+
+        public static double GetVertical(DependencyObject obj)
+        {
+            return (double) obj.GetValue(VerticalProperty);
+        }
+
+        private static void HorizontalChangedCallback(object sender, DependencyPropertyChangedEventArgs e)
+        {
+            var space = (double) e.NewValue;
+            var obj = (DependencyObject) sender;
+
+            MarginSetter.SetMargin(obj, new Thickness(0, 0, space, 0));
+            MarginSetter.SetLastItemMargin(obj, new Thickness(0));
+        }
+
+        [UsedImplicitly]
+        public static void SetHorizontal(DependencyObject obj, double space)
+        {
+            obj.SetValue(HorizontalProperty, space);
+        }
+
+        [UsedImplicitly]
+        public static void SetVertical(DependencyObject obj, double value)
+        {
+            obj.SetValue(VerticalProperty, value);
+        }
+
+        private static void VerticalChangedCallback(object sender, DependencyPropertyChangedEventArgs e)
+        {
+            var space = (double) e.NewValue;
+            var obj = (DependencyObject) sender;
+            MarginSetter.SetMargin(obj, new Thickness(0, 0, 0, space));
+            MarginSetter.SetLastItemMargin(obj, new Thickness(0));
+        }
+
+        public static readonly DependencyProperty VerticalProperty =
+            DependencyProperty.RegisterAttached("Vertical", typeof(double), typeof(Spacing),
+                new UIPropertyMetadata(0d, VerticalChangedCallback));
+
+        public static readonly DependencyProperty HorizontalProperty =
+            DependencyProperty.RegisterAttached("Horizontal", typeof(double), typeof(Spacing),
+                new UIPropertyMetadata(0d, HorizontalChangedCallback));
+    }
+}
\ No newline at end of file
diff --git a/Application/Options/UpdateOptionsPanel.xaml b/Application/Options/UpdateOptionsPanel.xaml
index 45dc310..f4a4c4e 100644
--- a/Application/Options/UpdateOptionsPanel.xaml
+++ b/Application/Options/UpdateOptionsPanel.xaml
@@ -6,19 +6,15 @@
                           xmlns:options="clr-namespace:FeedCenter.Options"
                           xmlns:properties="clr-namespace:FeedCenter.Properties"
                           mc:Ignorable="d"
-                          d:DesignHeight="300"
-                          d:DesignWidth="300">
-    <Grid>
+                          d:DesignHeight="150"
+                          d:DesignWidth="250">
+    <StackPanel options:Spacing.Vertical="10">
         <CheckBox Content="{x:Static properties:Resources.checkVersionOnStartupCheckBox}"
                   Name="CheckVersionOnStartupCheckBox"
-                  VerticalAlignment="Top"
-                  Click="CheckVersionOnStartupCheckBox_Click" />
+                  IsChecked="{Binding Source={x:Static properties:Settings.Default}, Path=CheckVersionAtStartup}"
+                  Click="OnSaveSettings" />
         <Button Content="{x:Static properties:Resources.checkVersionNowButton}"
-                Height="23"
                 HorizontalAlignment="Left"
-                Margin="0,22,0,0"
-                VerticalAlignment="Top"
-                Width="75"
                 Click="HandleCheckVersionNowButtonClick" />
-    </Grid>
+    </StackPanel>
 </options:OptionsPanelBase>
\ No newline at end of file
diff --git a/Application/Options/UpdateOptionsPanel.xaml.cs b/Application/Options/UpdateOptionsPanel.xaml.cs
index d2b0c75..20187c5 100644
--- a/Application/Options/UpdateOptionsPanel.xaml.cs
+++ b/Application/Options/UpdateOptionsPanel.xaml.cs
@@ -1,5 +1,6 @@
-using System.Windows;
-using ChrisKaczor.ApplicationUpdate;
+using ChrisKaczor.ApplicationUpdate;
+using FeedCenter.Properties;
+using System.Windows;
 
 namespace FeedCenter.Options;
 
@@ -12,25 +13,20 @@ public partial class UpdateOptionsPanel
 
     public override string CategoryName => Properties.Resources.optionCategoryUpdate;
 
-    public override void LoadPanel()
-    {
-        base.LoadPanel();
-
-        CheckVersionOnStartupCheckBox.IsChecked = Properties.Settings.Default.CheckVersionAtStartup;
-
-        MarkLoaded();
-    }
-
-    private void HandleCheckVersionNowButtonClick(object sender, System.Windows.RoutedEventArgs e)
+    private void HandleCheckVersionNowButtonClick(object sender, RoutedEventArgs e)
     {
         UpdateCheck.DisplayUpdateInformation(true);
     }
 
-    private void CheckVersionOnStartupCheckBox_Click(object sender, System.Windows.RoutedEventArgs e)
+    private void OnSaveSettings(object sender, RoutedEventArgs e)
+    {
+        SaveSettings();
+    }
+
+    private void SaveSettings()
     {
         if (!HasLoaded) return;
 
-        if (CheckVersionOnStartupCheckBox.IsChecked.HasValue && Properties.Settings.Default.CheckVersionAtStartup != CheckVersionOnStartupCheckBox.IsChecked.Value)
-            Properties.Settings.Default.CheckVersionAtStartup = CheckVersionOnStartupCheckBox.IsChecked.Value;
+        Settings.Default.Save();
     }
 }
\ No newline at end of file
diff --git a/Application/Options/UserAgentItem.cs b/Application/Options/UserAgentItem.cs
index 41ea3c4..c22cac0 100644
--- a/Application/Options/UserAgentItem.cs
+++ b/Application/Options/UserAgentItem.cs
@@ -2,38 +2,33 @@
 
 namespace FeedCenter.Options
 {
-    internal class UserAgentItem
+    public class UserAgentItem
     {
-        internal string Caption { get; set; }
-        internal string UserAgent { get; set; }
+        public string Caption { get; set; }
+        public string UserAgent { get; set; }
 
-        internal static List<UserAgentItem> GetUserAgents()
+        public static List<UserAgentItem> UserAgents => new()
         {
-            var userAgents = new List<UserAgentItem>
+            new UserAgentItem
             {
-                new()
-                {
-                    Caption = Properties.Resources.DefaultUserAgentCaption,
-                    UserAgent = string.Empty
-                },
-                new()
-                {
-                    Caption = "Windows RSS Platform 2.0",
-                    UserAgent = "Windows-RSS-Platform/2.0 (MSIE 9.0; Windows NT 6.1)"
-                },
-                new()
-                {
-                    Caption = "Feedly 1.0",
-                    UserAgent = "Feedly/1.0"
-                },
-                new()
-                {
-                    Caption = "curl",
-                    UserAgent = "curl/7.47.0"
-                }
-            };
-
-            return userAgents;
-        }
+                Caption = Properties.Resources.DefaultUserAgentCaption,
+                UserAgent = string.Empty
+            },
+            new UserAgentItem
+            {
+                Caption = "Windows RSS Platform 2.0",
+                UserAgent = "Windows-RSS-Platform/2.0 (MSIE 9.0; Windows NT 6.1)"
+            },
+            new UserAgentItem
+            {
+                Caption = "Feedly 1.0",
+                UserAgent = "Feedly/1.0"
+            },
+            new UserAgentItem
+            {
+                Caption = "curl",
+                UserAgent = "curl/7.47.0"
+            }
+        };
     }
 }
\ No newline at end of file
diff --git a/Application/Properties/Resources.Designer.cs b/Application/Properties/Resources.Designer.cs
index 7ac6450..4bbacbe 100644
--- a/Application/Properties/Resources.Designer.cs
+++ b/Application/Properties/Resources.Designer.cs
@@ -215,7 +215,7 @@ namespace FeedCenter.Properties {
         }
         
         /// <summary>
-        ///   Looks up a localized string similar to _Name:.
+        ///   Looks up a localized string similar to Name.
         /// </summary>
         public static string categoryNameLabel {
             get {
@@ -508,7 +508,7 @@ namespace FeedCenter.Properties {
         }
         
         /// <summary>
-        ///   Looks up a localized string similar to Default _browser:.
+        ///   Looks up a localized string similar to Default browser.
         /// </summary>
         public static string defaultBrowserLabel {
             get {
@@ -526,7 +526,7 @@ namespace FeedCenter.Properties {
         }
         
         /// <summary>
-        ///   Looks up a localized string similar to Default _user agent:.
+        ///   Looks up a localized string similar to Default user agent.
         /// </summary>
         public static string defaultUserAgentLabel {
             get {
@@ -994,7 +994,7 @@ namespace FeedCenter.Properties {
         }
         
         /// <summary>
-        ///   Looks up a localized string similar to _Multi-line items:.
+        ///   Looks up a localized string similar to Multiline titles.
         /// </summary>
         public static string multipleLineDisplayLabel {
             get {
@@ -1444,7 +1444,7 @@ namespace FeedCenter.Properties {
         }
         
         /// <summary>
-        ///   Looks up a localized string similar to _Tool bar location:.
+        ///   Looks up a localized string similar to Toolbar location.
         /// </summary>
         public static string toolbarLocationLabel {
             get {
@@ -1462,7 +1462,7 @@ namespace FeedCenter.Properties {
         }
         
         /// <summary>
-        ///   Looks up a localized string similar to Version: {0}.
+        ///   Looks up a localized string similar to Version {0}.
         /// </summary>
         public static string Version {
             get {
diff --git a/Application/Properties/Resources.resx b/Application/Properties/Resources.resx
index 4ad19f8..e9c8ce9 100644
--- a/Application/Properties/Resources.resx
+++ b/Application/Properties/Resources.resx
@@ -149,7 +149,7 @@
     <value>&lt; no title &gt;</value>
   </data>
   <data name="Version" xml:space="preserve">
-    <value>Version: {0}</value>
+    <value>Version {0}</value>
   </data>
   <data name="SplashCheckingForUpdate" xml:space="preserve">
     <value>Checking for update...</value>
@@ -320,7 +320,7 @@
     <value>Right</value>
   </data>
   <data name="toolbarLocationLabel" xml:space="preserve">
-    <value>_Tool bar location:</value>
+    <value>Toolbar location</value>
   </data>
   <data name="Top" xml:space="preserve">
     <value>Top</value>
@@ -347,7 +347,7 @@
     <value>_Register as default feed reader</value>
   </data>
   <data name="defaultBrowserLabel" xml:space="preserve">
-    <value>Default _browser:</value>
+    <value>Default browser</value>
   </data>
   <data name="DefaultBrowserCaption" xml:space="preserve">
     <value>&lt; Windows Default &gt;</value>
@@ -365,7 +365,7 @@
     <value>Edit Category</value>
   </data>
   <data name="multipleLineDisplayLabel" xml:space="preserve">
-    <value>_Multi-line items:</value>
+    <value>Multiline titles</value>
   </data>
   <data name="multipleLineDisplayFirstLine" xml:space="preserve">
     <value>Show only first line</value>
@@ -527,7 +527,7 @@
     <value>Feed Center</value>
   </data>
   <data name="defaultUserAgentLabel" xml:space="preserve">
-    <value>Default _user agent:</value>
+    <value>Default user agent</value>
   </data>
   <data name="SplashLoadingDatabase" xml:space="preserve">
     <value>Loading database...</value>
@@ -536,7 +536,7 @@
     <value>Migrating legacy database...</value>
   </data>
   <data name="categoryNameLabel" xml:space="preserve">
-    <value>_Name:</value>
+    <value>Name</value>
   </data>
   <data name="ConfirmDeleteCategory" xml:space="preserve">
     <value>Are you sure you want to delete this category?