Added new kb article window-center-horizontally-fixed-top (#2594)

Co-authored-by: KB Bot <[email protected]>

Author: kendo-bot

knowledge-base/window-center-horizontally-fixed-top.md

@@ -0,0 +1,68 @@
+---
+title: Center Telerik Window Horizontally and Keep Fixed Top Position
+description: Learn how to center a Telerik Window only horizontally while keeping it at a fixed distance from the top in Blazor applications.
+type: how-to
+page_title: How to Center Telerik Window Horizontally with a Fixed Top Position in Blazor
+slug: window-kb-center-horizontally-fixed-top
+tags: window, center horizontally, positioning, blazor, fixed top
+res_type: kb
+ticketid: 1672113
+---
+
+## Environment
+<table>
+	<tbody>
+		<tr>
+			<td>Product</td>
+			<td>Window for Blazor</td>
+		</tr>
+	</tbody>
+</table>
+
+## Description
+
+I want to center a Telerik Window horizontally in my Blazor application but keep it at a fixed distance from the top without using JavaScript for calculations.
+
+This knowledge base article answers the following questions:
+- How can I center a Telerik Window only horizontally in Blazor?
+- Is it possible to position a Telerik Window at a fixed distance from the top in Blazor while centering it horizontally?
+
+## Solution
+
+To center a Telerik Window horizontally while maintaining a fixed distance from the top, follow these steps:
+1. Apply a [custom CSS class]({%slug themes-override%}) to the Window. 
+1. Use this CSS class to set the initial top value, manage the horizontal centering and override the default vertical transformation. 
+
+>caption Telerik Blazor Window Centered Horizontally with Fixed Top Value
+
+````CSHTML
+<TelerikButton OnClick="@( () => WindowVisible = !WindowVisible )">Toggle Window</TelerikButton>
+
+<style>
+    .k-centered.centered-top {
+        top: 100px;
+        transform: translate(-50%, -0);
+    }
+</style>
+
+<TelerikWindow @bind-Visible="@WindowVisible"
+               Class="centered-top" >
+    <WindowActions>
+        <WindowAction Name="Minimize" />
+        <WindowAction Name="Close" />
+    </WindowActions>
+    <WindowTitle>
+        Window Title
+    </WindowTitle>
+    <WindowContent>
+        Window Content
+    </WindowContent>
+</TelerikWindow>
+
+@code {
+    private bool WindowVisible { get; set; } = true;
+}
+````
+
+## See Also
+- [Telerik Window for Blazor - Overview]({%slug window-overview%})