diff --git a/src/LumexUI/Components/DataGrid/LumexDataGrid.razor b/src/LumexUI/Components/DataGrid/LumexDataGrid.razor
index 580a038d..3fda36fa 100644
--- a/src/LumexUI/Components/DataGrid/LumexDataGrid.razor
+++ b/src/LumexUI/Components/DataGrid/LumexDataGrid.razor
@@ -34,6 +34,8 @@
 
             <div class="@Slots.Wrapper" data-slot="wrapper">
                 <table class="@Slots.Table" data-slot="table">
+                    @_renderColGroup
+
                     <thead class="@Slots.Thead" data-slot="thead">
                         <tr class="@Slots.Tr" data-slot="tr">
                             @_renderColumnHeaders
@@ -194,4 +196,14 @@
             </td>
         </tr>
     }
+
+    private void RenderColGroup( RenderTreeBuilder __builder )
+    {
+        <colgroup>
+            @foreach( var column in _columns )
+            {
+                <col class="@column.Class" />
+            }
+        </colgroup>
+    }
 }
\ No newline at end of file
diff --git a/src/LumexUI/Components/DataGrid/LumexDataGrid.razor.cs b/src/LumexUI/Components/DataGrid/LumexDataGrid.razor.cs
index 5ec8626d..2088e246 100644
--- a/src/LumexUI/Components/DataGrid/LumexDataGrid.razor.cs
+++ b/src/LumexUI/Components/DataGrid/LumexDataGrid.razor.cs
@@ -199,6 +199,7 @@ public partial class LumexDataGrid<T> : LumexComponentBase, IAsyncDisposable, IS
     private readonly List<LumexColumnBase<T>> _columns;
     private readonly Memoizer<Task> _refreshDataMemoizer;
     private readonly Memoizer<DataGridSlots> _slotsMemoizer;
+    private readonly RenderFragment _renderColGroup;
     private readonly RenderFragment _renderEmptyContent;
     private readonly RenderFragment _renderLoadingContent;
     private readonly RenderFragment _renderColumnHeaders;
@@ -223,6 +224,7 @@ public LumexDataGrid()
         _slotsMemoizer = new Memoizer<DataGridSlots>();
         _refreshDataMemoizer = new Memoizer<Task>();
 
+		_renderColGroup = RenderColGroup;
         _renderEmptyContent = RenderEmptyContent;
         _renderLoadingContent = RenderLoadingContent;
         _renderColumnHeaders = RenderColumnHeaders;