Update cursor.styl: fix #916

自定义鼠标，悬浮在自定义右键菜单的导航栏项目上时，自定义鼠标不生效

source/css/_style/_plugins/cursor.styl

@@ -42,7 +42,7 @@ a:not([href]) p,
 button[disabled],html input[disabled],
 .article .widget,
 #l_body .post section.meta .new-meta-box .new-meta-item .notlink,
-ul.list-v.rightmenu a,
+#rightmenu-wrapper ul.list-v.rightmenu a,
 span.btn a:not([href]),
 div.tabs ul.nav-tabs li.tab.active a,
 kbd,
@@ -70,7 +70,8 @@ input[type=submit],
 table::-webkit-scrollbar-thumb,
 scrollbar::-webkit-scrollbar-thumb,
 #scroll-down,
-ul.list-v.rightmenu li.music a.nav.volume .aplayer-volume-bar,
+#rightmenu-wrapper .aplayer-volume-bar,
+#rightmenu-wrapper li.music.ctrl a,
 #u-search .modal .modal-header .btn-close,
 #u-search .modal .modal-footer .nav,
 article .checkbox input,