diff --git a/templates/base.html b/templates/base.html
index bf235b3..a2921bf 100644
--- a/templates/base.html
+++ b/templates/base.html
@@ -12,10 +12,6 @@
             flex-direction: column;
             min-height: 100vh;
         }
-        .navbar {
-            box-shadow: 0 2px 4px rgba(0,0,0,.1);
-            background-color: rgb(124 146 157) !important;
-        }
         .main-content {
             flex: 1;
             padding-top: 20px;
@@ -26,9 +22,27 @@
             padding: 20px 0;
             margin-top: auto;
         }
+        .navbar {
+            box-shadow: 0 2px 4px rgba(0,0,0,.1);
+            background-color: rgb(124 146 157) !important;
+        }
+        .nav-item.active {
+            position: relative;
+        }
+        .nav-item.active::after {
+            content: '';
+            position: absolute;
+            bottom: 0;
+            left: 50%;
+            transform: translateX(-50%);
+            width: 50%;
+            height: 3px;
+            background-color: #333333;
+            border-radius: 3px 3px 0 0;
+        }
         .nav-item.active .nav-link {
             font-weight: 500;
-            color:  #333333 !important;
+            color: #333333 !important;
         }
     </style>
     {% block styles %}{% endblock %}
diff --git a/templates/ca_detail.html b/templates/ca_detail.html
index f1e2f30..1b597a4 100644
--- a/templates/ca_detail.html
+++ b/templates/ca_detail.html
@@ -97,7 +97,7 @@
                     <dt class="col-sm-4 text-muted"><i class="fas fa-clock me-2"></i> 创建时间</dt>
                     <dd class="col-sm-8">{{ ca.created_at.strftime('%Y-%m-%d %H:%M') }}</dd>
 
-                    <dt class="col-sm-4 text-muted"><i class="fas fa-folder-open me-1"></i> 证书路径</dt>
+                    <dt class="col-sm-4 text-muted"><i class="fas fa-certificate me-1"></i> 证书路径</dt>
                     <dd class="col-sm-8">
                         <code>{{ ca.cert_path|to_pinyin }}</code>
                     </dd>
diff --git a/templates/certificate_detail.html b/templates/certificate_detail.html
index c5a998e..abf574c 100644
--- a/templates/certificate_detail.html
+++ b/templates/certificate_detail.html
@@ -176,7 +176,7 @@
             </div>
             <div class="card-body">
                 <dl class="row mb-0">
-                    <dt class="col-sm-4 text-muted"><i class="fas fa-file-certificate me-2"></i> 证书文件</dt>
+                    <dt class="col-sm-4 text-muted"><i class="fas fa-certificate me-2"></i> 证书文件</dt>
                     <dd class="col-sm-8"><code>{{ cert.cert_path }}</code></dd>
 
                     <dt class="col-sm-4 text-muted"><i class="fas fa-key me-2"></i> 私钥文件</dt>