Fix

Shogi.UI/Shared/Stretch.razor

@@ -1,7 +1,10 @@
-<div>
+<div @attributes="@InputAttributes">
 	@ChildContent
 </div>
 
 @code {
+	[Parameter(CaptureUnmatchedValues = true)]
+	public Dictionary<string, object> InputAttributes { get; set; }
+
 	[Parameter] public RenderFragment ChildContent { get; set; } = default!;
 }