修改BUG：更新面包屑导航条

Bootstrap.Admin/Views/Shared/Header.cshtml

@@ -110,8 +110,10 @@
             <li><a href="~/Account/Logout"><i class="fa fa-key"></i>注销</a></li>
         </ul>
     </div>
-    <ul class="breadcrumb">
-        <li><a href="@Url.Content(Model.HomeUrl)"><i class="fa fa-home"></i>首页</a></li>
-        <li id="breadNav"></li>
-    </ul>
+    <nav aria-label="breadcrumb">
+        <ol class="breadcrumb">
+            <li class="breadcrumb-item"><a href="@Url.Content(Model.HomeUrl)"><i class="fa fa-home"></i>首页</a></li>
+            <li class="breadcrumb-item d-none" id="breadNav"></li>
+        </ol>
+    </nav>
 </header>

Bootstrap.Admin/wwwroot/css/site.css

@@ -412,28 +412,10 @@ a, a:hover, a:focus {
     padding: 7.5px 10px;
 }
 
-    .breadcrumb li {
-        padding-right: 5px;
-    }
-
-        .breadcrumb li.active {
-            display: inline-block;
-        }
-
-        .breadcrumb li.load {
-            display: none;
-        }
-
     .breadcrumb i {
         padding-right: 6px;
     }
 
-    .breadcrumb li + li:before {
-        padding: 0 5px;
-        color: #ccc;
-        content: "/\00a0";
-    }
-
 .content-body {
     position: fixed;
     left: 0;

Bootstrap.Admin/wwwroot/js/common-scripts.js

@@ -169,7 +169,7 @@ $(function () {
 
     // breadcrumb
     var arch = $('#nav-accordion').find('a.active').last();
-    $breadNav.text(arch.text() || $('title').text());
+    if (arch.text() !== "") $breadNav.removeClass('d-none').text(arch.text());
     var top = (arch.offset() || { top: 0 }).top;
     if (top > 0) {
         var middle = $('header').outerHeight() + $sidebar.outerHeight() / 2;