Update for overflow style.
diff --git a/docs/docs/styles/common-styles.md b/docs/docs/styles/common-styles.md
index 6ab9d4f..71150b8 100644
--- a/docs/docs/styles/common-styles.md
+++ b/docs/docs/styles/common-styles.md
@@ -22,7 +22,8 @@
:::
::: warning
-Weex only supports `overflow:hidden`.
+* On Android, Weex only supports `overflow:hidden`.
+* On iOS, before version 0.24, Weex behaves the same as browser, so overflow is visible by default. From 0.25, overflow on iOS is hidden by default. And `overflow` is ignored on iOS. You should use 'ios-overflow' to set overflow value on iOS. Please refer to this [Demo](http://editor.weex.io/vue/5033e82e4341472a4a218ca3bd8ca7f3)
:::
The following code snippets shows the basic usage of box model
@@ -92,7 +93,7 @@
:::
::: danger Only for Android
-Although `overflow:hidden` is default on android, a view **will not** clip its children according to `border-radius` unless all the following conditions meet.
+Although `overflow:hidden` is default on Android, a view **will not** clip its children according to `border-radius` unless all the following conditions meet.
* The view type is `div`, `a`, `cell`, `refresh` or `loading`.
* OS version is Android 4.3 or higher.
* OS version is **not** Android 7.0
diff --git a/docs/zh/docs/styles/common-styles.md b/docs/zh/docs/styles/common-styles.md
index d850d73..fe10f38 100644
--- a/docs/zh/docs/styles/common-styles.md
+++ b/docs/zh/docs/styles/common-styles.md
@@ -23,7 +23,8 @@
:::
::: warning
-Weex 只支持 `overflow:hidden`.
+* 在 Android 平台，Weex 只支持 `overflow:hidden`。
+* 在 iOS 上，0.24版本及以前，Weex 与浏览器行为一致，`overflow` 默认是 `visible`。从 0.25 版本开始，默认改为 `hidden`。同时 `overflow` 样式在 iOS 上会被忽略。你需要使用 `ios-overflow` 样式名称来指定。可参考 [样例](http://editor.weex.io/vue/5033e82e4341472a4a218ca3bd8ca7f3)
:::
下面的例子显示了盒模型的基本用法
