modify: fix style for more option button

Author: sota1235

browser/main/Detail/NoteDetailInfo.styl

@@ -35,13 +35,12 @@ $info-height = 60px
   width 34px
   height 34px
   border-radius 17px
-  navButtonColor()
   font-size 14px
-  margin 13px 2px
+  margin 13px 7px
   padding 0
-  &:active
-    border-color $ui-button--focus-borderColor
-  &:hover .info-right-button-tooltip
+  border none
+  color $ui-button-color
+  background-color transparent
+  &:hover
     opacity 1
-  &:focus
-    border-color $ui-button--focus-borderColor
+    background-color $ui-button--hover-backgroundColor