* Adjust code .

module/api/css/index.css

@@ -12,12 +12,13 @@
 
 /* tree */
 .img-lib {flex: 0 0 16px; height: 14px;}
-
+a.lib {margin-bottom: 0;}
 .tree-icon {position: absolute; right: 0;}
 .tree li > a {max-width: 100%; padding: 2px;}
 .file-tree  a.show-icon > div {padding-right: 15px;}
 .file-tree .tree-text {overflow: hidden;}
 .tree li.has-input {overflow: hidden;}
+.tree li.has-list.open:before {display: none;}
 
 /* sideBar */
 

module/api/js/index.js

@@ -71,7 +71,7 @@ $(document).ready(function()
             var hasChild = item.children ? !!item.children.length : false;
             var $item = '<a href="###" style="position: relative" data-has-children="' + hasChild + '" title="' + item.name + '" data-id="' + item.id + '" class="' + libClass + '" data-type="' + item.type + '">';
             $item += '<div class="text h-full w-full flex-start overflow-hidden">';
-            if(libClass == 'lib') $item += '<div class="img-lib" style="background-image:url(static/svg/interfacelib.svg)"></div>';
+            if(libClass == 'lib') $item += '<div class="img-lib" style="background-image:url(static/svg/interface-doclib.svg)"></div>';
             $item += '<div class="tree-text" style="padding-left: 5px;">';
             $item += item.name
             $item += '</div>';