Remove default margin-bottom of Alert

components/alert/demo/basic.md

@@ -20,3 +20,9 @@ ReactDOM.render(
   <Alert message="Success Text" type="success" />
 , mountNode);
 ````
+
+<style>
+.ant-alert {
+  margin-bottom: 16px;
+}
+</style>

components/alert/index.zh-CN.md

@@ -24,4 +24,3 @@ title: Alert
 | onClose     | 关闭时触发的回调函数                                | Function   | 无    |
 | showIcon   | 是否显示辅助图标                                 | boolean   | false，`banner` 模式下默认值为 true    |
 | banner   | 是否用作顶部公告                                 | boolean   | false    |
-

components/alert/style/index.less

@@ -12,7 +12,6 @@
   color: @alert-text-color;
   font-size: @font-size-base;
   line-height: 16px;
-  margin-bottom: 10px;
 
   &&-no-icon {
     padding: 8px 48px 8px 16px;
@@ -91,7 +90,6 @@
     padding: 16px 16px 16px 60px;
     position: relative;
     border-radius: @border-radius-base;
-    margin-bottom: 10px;
     color: @text-color;
     line-height: 1.5;
   }