diff --git a/browser/main/Detail/FolderSelect.styl b/browser/main/Detail/FolderSelect.styl
new file mode 100644
index 00000000..0abe6589
--- /dev/null
+++ b/browser/main/Detail/FolderSelect.styl
@@ -0,0 +1,132 @@
+.root
+  position relative
+  border solid 1px transparent
+  line-height 34px
+  vertical-align middle
+  border-radius 2px
+  transition 0.15s
+  user-select none
+  &:hover
+    background-color white
+    border-color $ui-borderColor
+
+.root--search, .root--focus
+  @extend .root
+  background-color white
+  border-color $ui-input--focus-borderColor
+  &: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
+.idle-label-name-surfix
+  font-size 10px
+  color $ui-inactive-text-color
+  margin-left 5px
+.idle-caret
+  absolute right top
+  height 34px
+  width 20px
+  line-height 34px
+
+.search
+  absolute top left right bottom
+  line-height 34px
+
+.search-input
+  vertical-align middle
+  position relative
+  top -2px
+  outline none
+  border none
+  height 20px
+  line-height 20px
+  background-color transparent
+  padding 0 10px
+
+.search-optionList
+  position fixed
+  max-height 450px
+  overflow auto
+  z-index 200
+  background-color white
+  border-radius 2px
+  box-shadow 2px 2px 10px gray
+
+.search-optionList-item
+  height 34px
+  width 250px
+  box-sizing border-box
+  padding 0 5px
+  overflow ellipsis
+  cursor pointer
+  &:hover
+    background-color $ui-button--hover-backgroundColor
+
+.search-optionList-item--active
+  @extend .search-optionList-item
+  background-color $ui-button--active-backgroundColor
+  color $ui-button--active-color
+  &:hover
+    background-color $ui-button--active-backgroundColor
+    color $ui-button--active-color
+.search-optionList-item-name
+  border-left solid 4px transparent
+  padding 2px 5px
+.search-optionList-item-name-surfix
+  font-size 10px
+  color $ui-inactive-text-color
+  margin-left 5px
+
+body[data-theme="dark"]
+  .root
+    color $ui-dark-text-color
+    &:hover
+      color white
+      background-color $ui-dark-button--hover-backgroundColor
+      border-color $ui-dark-borderColor
+
+  .root--search, .root--focus
+    @extend .root
+    background-color $ui-dark-button--hover-backgroundColor
+    border-color $ui-input--focus-borderColor
+    &:hover
+      background-color $ui-dark-button--hover-backgroundColor
+      border-color $ui-input--focus-borderColor
+
+  .idle-label-name-surfix
+    color $ui-dark-inactive-text-color
+
+  .search-input
+    color white
+    background-color transparent
+    border-color $ui-dark-borderColor
+
+  .search-optionList
+    color white
+    background-color $ui-dark-button--hover-backgroundColor
+    box-shadow 2px 2px 10px black
+
+  .search-optionList-item
+    &:hover
+      background-color lighten($ui-dark-button--hover-backgroundColor, 15%)
+
+  .search-optionList-item--active
+    background-color $ui-dark-button--active-backgroundColor
+    color $ui-dark-button--active-color
+    &:hover
+      background-color $ui-dark-button--active-backgroundColor
+      color $ui-dark-button--active-color
+  .search-optionList-item-name-surfix
+    color $ui-dark-inactive-text-color