Update: （步骤备份）选项管理修改完成，增加批量删除功能

static/system/component/pear/css/module/treetable.css

@@ -1,25 +0,0 @@
-.treeTable-icon  i:last-child{
-	display: none!important;
-}
-
-.treeTable-empty{
-	margin-left: -3px;
-}
-.treeTable-empty {
-    width: 20px;
-    display: inline-block;
-}
-
-.treeTable-icon {
-    cursor: pointer;
-}
-
-.treeTable-icon .layui-icon-triangle-d:before {
-    content: "\e623";
-}
-
-.treeTable-icon.open .layui-icon-triangle-d:before {
-    content: "\e625";
-    background-color: transparent;
-}
-

static/system/component/pear/css/pear.css

@@ -14,4 +14,4 @@
 @import url("module/dtree/font/dtreefont.css");
 @import url("module/dtree/dtree.css");
 @import url("module/layer.css");
-@import url("module/layout.css");
+@import url("module/layout.css");