modify: add folder selector on top of note detail component

browser/main/Detail/FolderSelect.styl

@@ -7,29 +7,27 @@
   transition 0.15s
   user-select none
   &:hover
-    background-color white
-    border-color $ui-borderColor
+    background-color $ui-button--hover-backgroundColor
 
 .root--search, .root--focus
   @extend .root
-  background-color white
+  background-color $ui-noteDetail-backgroundColor = #F4F4F4
   border-color $ui-input--focus-borderColor
+  width 100px
   &:hover
-    background-color white
     border-color $ui-input--focus-borderColor
 
 .idle
   position relative
   cursor pointer
+
 .idle-label
-  absolute left top
-  padding 0 0 0 5px
   right 20px
   overflow ellipsis
 
 .idle-label-name
-  border-left solid 4px transparent
-  padding 2px 5px
+  padding 2px
+
 .idle-label-name-surfix
   font-size 10px
   color $ui-inactive-text-color
@@ -60,9 +58,9 @@
   max-height 450px
   overflow auto
   z-index 200
+  border $ui-border
   background-color white
   border-radius 2px
-  box-shadow 2px 2px 10px gray
 
 .search-optionList-item
   height 34px
@@ -115,8 +113,8 @@ body[data-theme="dark"]
 
   .search-optionList
     color white
+    border-color $ui-dark-borderColor
     background-color $ui-dark-button--hover-backgroundColor
-    box-shadow 2px 2px 10px black
 
   .search-optionList-item
     &:hover