diff --git a/functions.php b/functions.php
index 5384878..0fcda33 100644
--- a/functions.php
+++ b/functions.php
@@ -369,19 +369,6 @@ classes: {
     );
     $form->addInput($mdrPray);
 
-
-    $RandomLinks = new Typecho_Widget_Helper_Form_Element_Radio(
-        'RandomLinks',
-        array(
-            true => _t('开'),
-            false => _t('关')
-        ),
-        ture,
-        _t('友情链接随机排序'),
-        _t('开启后友情链接将按照随机顺序排列')
-    );
-    $form->addInput($RandomLinks);
-
     $mdrHitokoto = new Typecho_Widget_Helper_Form_Element_Radio(
         'mdrHitokoto',
         array(
@@ -645,7 +632,7 @@ function getCatalog() {
 		for ($i=0; $i<=$to_depth; $i++) {
 			$index .= '</li>'."\n".'</ul>'."\n";
 		}
-	$index = '<div id="catalog-col">'."\n".'<b>文章目录</b>'."\n".$index.'<script>function Catalogswith(){document.getElementById("catalog-col").classList.toggle("catalog");document.getElementById("catalog").classList.toggle("catalog")}</script>'."\n".'</div>'."\n";
+	$index = '<div id="catalog-col" class="mdui-card">'."\n".'<b>文章目录</b>'."\n".$index.'<script>function Catalogswith(){document.getElementById("catalog-col").classList.toggle("catalog");document.getElementById("catalog").classList.toggle("catalog")}</script>'."\n".'</div>'."\n";
 	}
 	return $index;
 }
diff --git a/style.css b/style.css
index 47d658c..60802c0 100644
--- a/style.css
+++ b/style.css
@@ -12,9 +12,6 @@ ul li p, #footer p, .whisper .comment-author {
 h1.post-title {
     font-size:1.5em
 }
-#catalog-col b {
-    font-size:1.2em
-}
 table {
     width:100%;
     border-collapse:collapse;
@@ -133,7 +130,7 @@ button, input[type=submit], .menu-parent a, .rewards a {
     display:block;
     max-height:30px
 }
-.menu-parent ul, #catalog-col, .rewards img, #music span, #catalog:before, #catalog:after, #catalog span {
+.menu-parent ul, #catalog-col, .rewards img, #music span {
     transition:.2s;
     -webkit-transition:.2s
 }
@@ -277,8 +274,6 @@ button, input[type=submit], .menu-parent a, .rewards a {
     min-width:150px;
     max-width:50%;
     max-height:50%;
-    color:#eee;
-    background:rgba(0, 0, 0, .7);
     border:1em solid transparent;
     border-right-width:.3em;
     overflow:auto
@@ -286,16 +281,6 @@ button, input[type=submit], .menu-parent a, .rewards a {
 #catalog-col.catalog {
     margin-right:-535px
 }
-#catalog-col>ul {
-    margin:1em .5em 0 0
-}
-#catalog-col ul {
-    padding-left:20px
-}
-#catalog-col a {
-    color:#eee;
-    border:0
-}
 .post-content .cl-offset {
     position:relative;
     display:block;
@@ -667,27 +652,6 @@ button, input[type=submit], .menu-parent a, .rewards a {
     width:0;
     background:#eee
 }
-#catalog span, #catalog:before, #catalog:after {
-    position:absolute;
-    display:block;
-    top:50%;
-    left:50%;
-    margin:-1px 0 0 -6px;
-    width:12px;
-    height:1px;
-    background:currentColor
-}
-#catalog:before {
-    content:"";
-    margin-top:-5px
-}
-#catalog:after {
-    content:"";
-    margin-top:3px
-}
-#catalog.catalog {
-    left:-5px
-}
 #catalog.catalog:before {
     margin:-4px 0 0 -11px;
     transform:rotate(-30deg);