| @tree-prefix-cls: ~"@{css-prefix}tree"; | 
|   | 
| .@{tree-prefix-cls} { | 
|     position: relative; | 
|     ul{ | 
|         list-style: none; | 
|         margin: 0; | 
|         padding: 0; | 
|         font-size: @font-size-base; | 
|         &.@{dropdown-prefix-cls}-menu{ | 
|             padding: 0; | 
|         } | 
|         li{ | 
|             list-style: none; | 
|             margin: 8px 0; | 
|             padding: 0; | 
|             white-space: nowrap; | 
|             outline: none; | 
|   | 
|             &.@{dropdown-item-prefix-cls}{ | 
|                 margin: 0; | 
|                 padding: 7px 16px; | 
|                 white-space: nowrap; | 
|             } | 
|         } | 
|     } | 
|     li{ | 
|         ul{ | 
|             margin: 0; | 
|             padding: 0 0 0 18px; | 
|         } | 
|     } | 
|     &-title { | 
|         display: inline-block; | 
|         margin: 0; | 
|         padding: 0 4px; | 
|         border-radius: @btn-border-radius-small; | 
|         cursor: pointer; | 
|         vertical-align: top; | 
|         color: @text-color; | 
|         transition: all @transition-time @ease-in-out; | 
|         &:hover { | 
|             background-color: tint(@primary-color, 90%); | 
|         } | 
|         &-selected, &-selected:hover{ | 
|             background-color: tint(@primary-color, 80%); | 
|         } | 
|     } | 
|     &-arrow{ | 
|         cursor: pointer; | 
|         width: 12px; | 
|         text-align: center; | 
|         display: inline-block; | 
|         i { | 
|             transition: all @transition-time @ease-in-out; | 
|             font-size: @font-size-base; | 
|             vertical-align: middle; | 
|         } | 
|         &-open{ | 
|             i { | 
|                 transform: rotate(90deg); | 
|             } | 
|         } | 
|         //&-hidden{ | 
|         //    cursor: auto; | 
|         //    i{ | 
|         //        display: none; | 
|         //    } | 
|         //} | 
|         &-disabled{ | 
|             //cursor: @cursor-disabled; | 
|         } | 
|     } | 
|   | 
|     .@{checkbox-prefix-cls}-wrapper{ | 
|         margin-right: 4px; | 
|         margin-left: 4px; | 
|     } | 
|   | 
|     &-context-menu{ | 
|         position: absolute; | 
|     } | 
| } |