兼容android显示小红点问题。review by 张文文。

@@ -75,8 +75,8 @@ export default class ContentMessageTabView extends Component {
 
 let styles = StyleSheet.create({
     container: {
-        marginTop: 33,
-        marginBottom: 40,
+        paddingTop: 33,
+        paddingBottom: 40,
         flexDirection: 'column',
         justifyContent: 'center',
         paddingLeft: 30,