diff --git a/_includes/nav.html b/_includes/nav.html
index 18d7cf0..9053418 100644
--- a/_includes/nav.html
+++ b/_includes/nav.html
@@ -28,13 +28,13 @@
         清华大学</span>开源软件镜像站</a>
     </div>
     <div class="{% unless page.legacy %}navbar-collapse collapse {% endunless %}navbar-right">
-      <ul class="nav navbar-nav">
-        <li><a href="https://tuna.moe/">HOME</a></li>
-        <li><a href="https://tuna.moe/events/">EVENTS</a></li>
-        <li><a href="https://tuna.moe/blog/">BLOG</a></li>
-        <li><a href="https://tuna.moe/feed.xml">RSS</a></li>
-        <li><a href="https://podcast.tuna.moe/">PODCAST</a></li>
-        <li class="active"><a href="http://mirrors.tuna.tsinghua.edu.cn/">MIRRORS</a></li>
+      <ul class="nav navbar-nav" role="menubar">
+        <li role="none"><a role="menuitem" href="https://tuna.moe/">HOME</a></li>
+        <li role="none"><a role="menuitem" href="https://tuna.moe/events/">EVENTS</a></li>
+        <li role="none"><a role="menuitem" href="https://tuna.moe/blog/">BLOG</a></li>
+        <li role="none"><a role="menuitem" href="https://tuna.moe/feed.xml">RSS</a></li>
+        <li role="none"><a role="menuitem" href="https://podcast.tuna.moe/">PODCAST</a></li>
+        <li role="none" class="active"><a role="menuitem" aria-checked="true" href="http://mirrors.tuna.tsinghua.edu.cn/">MIRRORS</a></li>
       </ul>
     </div><!--/.nav-collapse -->
   </div>
diff --git a/_layouts/index.html b/_layouts/index.html
index 6f5db49..ab08a40 100644
--- a/_layouts/index.html
+++ b/_layouts/index.html
@@ -51,7 +51,7 @@
 								<tr v-for="mir in filteredMirrorList" :class="['row', 'status-'+mir.status]" :key="mir.name">
 									<td class="col-md-8">
 										<a class="mirror-item-label"  data-toggle="popover" data-trigger="hover" data-placement="right" 
-											:data-content="mir.description" :href="getURL(mir)">
+											:data-content="mir.description" :href="getURL(mir)" :aria-label="mir.name + ', ' + mir.description">
 											{{mir.name}}
 											<span class="label label-new" v-if='mir.is_new'>new</span>
 											<a v-if='mir.help_url' :href="mir.help_url"><i class="fa fa-question-circle" title="Help"></i></a>
diff --git a/static/css/_bootstrap-mod.scss b/static/css/_bootstrap-mod.scss
index d7a8436..7ecba5b 100644
--- a/static/css/_bootstrap-mod.scss
+++ b/static/css/_bootstrap-mod.scss
@@ -116,6 +116,13 @@ code{
     border-bottom: 1px solid #ffffff;
     margin-bottom: 25px;
 }
+
+table .row{
+  &:before, &:after{
+    content: none;
+  }
+}
+
 @include dark{
     .popover{
         background-color: #282828;