diff --git a/samples/AtomUI.Demo.Desktop/ShowCase/LineEditShowCase.axaml b/samples/AtomUI.Demo.Desktop/ShowCase/LineEditShowCase.axaml
index a7bb32d..6dde7c8 100644
--- a/samples/AtomUI.Demo.Desktop/ShowCase/LineEditShowCase.axaml
+++ b/samples/AtomUI.Demo.Desktop/ShowCase/LineEditShowCase.axaml
@@ -14,5 +14,25 @@
             <atom:LineEdit Watermark="Basic usage"/>
         </showcase:ShowCaseItem>
         
+        <showcase:ShowCaseItem
+            Title="Three sizes of Input"
+            Description="There are three sizes of an Input box: large (40px), default (32px) and small (24px).">
+          <StackPanel Orientation="Vertical" Spacing="10">
+              <atom:LineEdit Watermark="Large" SizeType="Large"/>
+              <atom:LineEdit Watermark="Middle" SizeType="Middle"/>
+              <atom:LineEdit Watermark="Small" SizeType="Small"/>
+          </StackPanel>
+        </showcase:ShowCaseItem>
+        
+        <showcase:ShowCaseItem
+            Title="Variants"
+            Description="Variants of Input.">
+            <StackPanel Orientation="Vertical" Spacing="10">
+                <atom:LineEdit Watermark="Outlined" StyleVariant="Outline"/>
+                <atom:LineEdit Watermark="Filled" StyleVariant="Filled"/>
+                <atom:LineEdit Watermark="Borderless" StyleVariant="Borderless"/>
+            </StackPanel>
+        </showcase:ShowCaseItem>
+        
     </showcase:ShowCasePanel>
 </UserControl>
\ No newline at end of file
diff --git a/src/AtomUI.Controls/Input/LineEdit.cs b/src/AtomUI.Controls/Input/LineEdit.cs
index 74f3ad4..722bdcd 100644
--- a/src/AtomUI.Controls/Input/LineEdit.cs
+++ b/src/AtomUI.Controls/Input/LineEdit.cs
@@ -86,7 +86,7 @@ public class LineEdit : TextBox
 
    static LineEdit()
    {
-      AffectsRender<LineEdit>(BorderBrushProperty);
+      AffectsRender<LineEdit>(BorderBrushProperty, BackgroundProperty);
       AffectsMeasure<LineEdit>(LeftAddOnProperty, RightAddOnProperty);
    }
 
@@ -106,8 +106,15 @@ public class LineEdit : TextBox
       if (Transitions is null) {
          Transitions = new Transitions();
          Transitions.Add(AnimationUtils.CreateTransition<SolidColorBrushTransition>(BorderBrushProperty));
+         Transitions.Add(AnimationUtils.CreateTransition<SolidColorBrushTransition>(BackgroundProperty));
       }
    }
+   
+   protected override Size MeasureOverride(Size availableSize)
+   {
+      var size = base.MeasureOverride(availableSize);
+      return size.Inflate(BorderThickness);
+   }
 
    public override void Render(DrawingContext context)
    {
@@ -116,10 +123,10 @@ public class LineEdit : TextBox
       using var state = context.PushTransform(Matrix.CreateTranslation(borderRect.X, borderRect.Y));
       _borderRenderHelper.Render(context,
                                  borderThickness: BorderThickness,
-                                 backgroundSizing: BackgroundSizing.OuterBorderEdge,
+                                 backgroundSizing: BackgroundSizing.InnerBorderEdge,
                                  finalSize: borderRect.Size,
                                  cornerRadius: borderRadius,
-                                 background: null,
+                                 background: Background,
                                  borderBrush: BorderBrush,
                                  boxShadows: new BoxShadows());
    }
@@ -151,6 +158,7 @@ public class LineEdit : TextBox
    {
       var offsetStart = 0d;
       var offsetEnd = 0d;
+      var bounds = Bounds.Deflate(BorderThickness);
       if (_leftAddOnPresenter is not null && _leftAddOnPresenter.IsVisible) {
          offsetStart += _leftAddOnPresenter.DesiredSize.Width;
       }
@@ -158,7 +166,9 @@ public class LineEdit : TextBox
          offsetEnd += _rightAddOnPresenter.DesiredSize.Width;
       }
 
-      return new Rect(new Point(offsetStart, Bounds.Y),
-                      new Size(Bounds.Width - offsetStart + offsetEnd, Bounds.Height));
+      return new Rect(new Point(offsetStart + BorderThickness.Left, BorderThickness.Top),
+                      new Size(bounds.Width - offsetStart - offsetEnd, 
+                               bounds.Height));
    }
+
 }
\ No newline at end of file
diff --git a/src/AtomUI.Controls/Input/LineEditTheme.cs b/src/AtomUI.Controls/Input/LineEditTheme.cs
index a5c7318..60e683d 100644
--- a/src/AtomUI.Controls/Input/LineEditTheme.cs
+++ b/src/AtomUI.Controls/Input/LineEditTheme.cs
@@ -1,6 +1,8 @@
 using AtomUI.Data;
 using AtomUI.Theme;
+using AtomUI.Theme.Data;
 using AtomUI.Theme.Styling;
+using AtomUI.Theme.Utils;
 using Avalonia.Controls;
 using Avalonia.Controls.Presenters;
 using Avalonia.Controls.Templates;
@@ -213,6 +215,7 @@ internal class LineEditTheme : BaseControlTheme
    {
       BuildFixedStyle();
       BuildCommonStyle();
+      BuildFilledStyle();
       BuildOutLineStyle();
    }
 
@@ -272,4 +275,23 @@ internal class LineEditTheme : BaseControlTheme
        Add(outlineStyle);
    }
 
+   private void BuildFilledStyle()
+   {
+      var filledStyle = new Style(selector => selector.Nesting().PropertyEquals(LineEdit.StyleVariantProperty, TextBoxVariant.Filled));
+       
+      filledStyle.Add(LineEdit.BorderBrushProperty, GlobalResourceKey.ColorTransparent);
+      filledStyle.Add(LineEdit.BackgroundProperty, GlobalResourceKey.ColorFillTertiary);
+
+      var hoverStyle = new Style(selector => selector.Nesting().Class(StdPseudoClass.PointerOver));
+      hoverStyle.Add(LineEdit.BackgroundProperty, GlobalResourceKey.ColorFillSecondary);
+      filledStyle.Add(hoverStyle);
+       
+      var focusStyle = new Style(selector => selector.Nesting().Class(StdPseudoClass.FocusWithIn));
+      focusStyle.Add(LineEdit.BorderBrushProperty, LineEditResourceKey.ActiveBorderColor);
+      focusStyle.Add(LineEdit.BackgroundProperty, LineEditResourceKey.ActiveBg);
+      filledStyle.Add(focusStyle);
+       
+      Add(filledStyle);
+   }
+
 }
\ No newline at end of file
diff --git a/src/AtomUI.Controls/Input/LineEditToken.cs b/src/AtomUI.Controls/Input/LineEditToken.cs
index d0b75c9..a49eaf1 100644
--- a/src/AtomUI.Controls/Input/LineEditToken.cs
+++ b/src/AtomUI.Controls/Input/LineEditToken.cs
@@ -88,6 +88,7 @@ internal class LineEditToken : AbstractControlDesignToken
    {
       base.CalculateFromAlias();
       var fontSize = _globalToken.FontToken.FontSize;
+      var fontSizeLG = _globalToken.FontToken.FontSizeLG;
       var lineHeight = _globalToken.FontToken.LineHeight;
       var lineHeightLG = _globalToken.FontToken.LineHeightLG;
       var lineWidth = _globalToken.SeedToken.LineWidth;
@@ -96,7 +97,7 @@ internal class LineEditToken : AbstractControlDesignToken
       PaddingSM = new Thickness(_globalToken.ControlPaddingSM - lineWidth, 
                               Math.Round(((_globalToken.HeightToken.ControlHeightSM - fontSize * lineHeight) / 2) * 10) / 10 - lineWidth);
       PaddingLG = new Thickness(_globalToken.ControlPadding - lineWidth, 
-                                Math.Ceiling(((_globalToken.HeightToken.ControlHeightLG - fontSize * lineHeightLG) / 2) * 10) / 10 - lineWidth);
+                                Math.Ceiling(((_globalToken.HeightToken.ControlHeightLG - fontSizeLG * lineHeightLG) / 2) * 10) / 10 - lineWidth);
 
       AddonBg = _globalToken.ColorFillAlter;
       ActiveBorderColor = _globalToken.ColorToken.ColorPrimaryToken.ColorPrimary;