feat: 多选列增加默认居中逻辑

Author: ArgoZhang

src/BootstrapBlazor/Components/Table/Table.razor.cs

@@ -1,4 +1,4 @@
-// Licensed to the .NET Foundation under one or more agreements.
+// Licensed to the .NET Foundation under one or more agreements.
 // The .NET Foundation licenses this file to you under the Apache 2.0 License
 // See the LICENSE file in the project root for more information.
 // Maintainer: Argo Zhang(argo@live.ca) Website: https://www.blazor.zone
@@ -97,6 +97,7 @@ public partial class Table<TItem> : ITable, IModelEqualityComparer<TItem> where
         .AddClass("table-resize", AllowResizing)
         .AddClass("table-fixed-body", RenderMode == TableRenderMode.CardView && IsFixedHeader)
         .AddClass("table-striped table-hover", ActiveRenderMode == TableRenderMode.CardView && IsStriped)
+        .AddClass("table-multi", IsMultipleSelect)
         .Build();
 
     private string? FooterClassString => CssBuilder.Default("table-footer")

src/BootstrapBlazor/Components/Table/Table.razor.scss

@@ -1,4 +1,4 @@
-.table-container {
+.table-container {
     --bb-table-td-padding-x: .5rem;
     --bb-table-td-padding-y: .5rem;
     --bb-table-cardview-label-width: 30%;
@@ -44,6 +44,11 @@
             overflow: auto;
         }
     }
+
+    .table-multi th:first-child > .table-cell,
+    .table-multi td:first-child > .table-cell {
+        justify-content: center;
+    }
 }
 
 .table-container .table:not(.table-excel) .switch {