调整菜单样式并删除无用样式

Author: xurui3762791

styl/background.styl

@@ -84,17 +84,13 @@ $menu_width = 100px
             &:hover,&.active
                 background rgb(255, 164, 0)
                 color #fff
-            &:visited
-                background rgba(255,255,255,1)
-                color #EAEAEA
     .popup
         transition all 0.6s
         position fixed
         width 100%
         height 100%
         margin-left 0px
         background-color rgba(0, 0, 0,0)
-        z-index 999
         opacity 1
         overflow auto
         z-index 0