diff --git a/components/dropdown/index.md b/components/dropdown/index.md
index 13db8872b8..933a5d36c8 100644
--- a/components/dropdown/index.md
+++ b/components/dropdown/index.md
@@ -20,7 +20,7 @@
 |-------------|------------------|--------------------|--------------|
 | trigger     | 触发下拉的行为   | ['click'] or ['hover'] | ['hover']        |
 | overlay     | 菜单节点         | [Menu](/components/menu) | 无     |
-
+| getPopupContainer | 菜单渲染父节点。默认渲染到 body 上，如果你遇到菜单滚动定位问题，试试修改为滚动的区域，并相对其定位。[示例](http://codepen.io/anon/pen/ONjyba?editors=001) | Function(triggerNode) | () => document.body |
 
 菜单可由 `antd.Menu` 取得，可设置 `onSelect` 回调，菜单还包括菜单项 `antd.Menu.Item`，分割线 `antd.Menu.Divider`。
 
diff --git a/components/popover/index.md b/components/popover/index.md
index c64b6532ad..def27a85f5 100644
--- a/components/popover/index.md
+++ b/components/popover/index.md
@@ -26,3 +26,4 @@
 | prefixCls | 浮层的类名                        | string        | ant-popover   |
 | visible   | 用于手动控制浮层显隐                     | boolean       | false  |
 | onVisibleChange | 显示隐藏改变的回调                 | function      | 无     |
+| getTooltipContainer | 菜单渲染父节点。默认渲染到 body 上，如果你遇到菜单滚动定位问题，试试修改为滚动的区域，并相对其定位。[示例](http://codepen.io/anon/pen/ONjyba?editors=001) | Function(triggerNode) | () => document.body |
diff --git a/components/select/index.md b/components/select/index.md
index 0375e3f7cd..e5af9007e9 100644
--- a/components/select/index.md
+++ b/components/select/index.md
@@ -43,6 +43,7 @@
 | size    | 选择框大小，可选 `large` `small`  | String      |      default      |
 | showSearch | 在下拉中显示搜索框 | boolean | false |
 | disabled | 是否禁用 | boolean | false |
+| getPopupContainer | 菜单渲染父节点。默认渲染到 body 上，如果你遇到菜单滚动定位问题，试试修改为滚动的区域，并相对其定位。[示例](http://codepen.io/anon/pen/ONjyba?editors=001) | Function(triggerNode) | () => document.body |
 
 ### Option props
 
diff --git a/style/mixins/button.less b/style/mixins/button.less
index cc9b90c035..bc6e481fc5 100644
--- a/style/mixins/button.less
+++ b/style/mixins/button.less
@@ -83,10 +83,6 @@
   .button-size(@btn-padding-base; @font-size-base; @border-radius-base);
   .user-select(none);
   .transition(all .3s @ease-in-out);
-  transform: translate3d(0, 0, 0);
-  // Fix for ie8 border-radius
-  // http://css3pie.com/documentation/known-issues/#z-index
-  position: relative\0;
 
   > .@{iconfont-css-prefix} {
     line-height: 1;