以 flex-direction: row 为参考。

space-around：每个子元素之间的距离相等，两端的子元素距离容器的距离也和其它子元素之间的距离相同。

1.Web

flex-direction: row;
justify-content: space-around;

2.React Native

flexDirection: 'row',
justifyContent: 'space-around',

3.微信小程序

flex-direction: row;
justify-content: space-around;