freeCodeCamp/guide/chinese/certifications/responsive-web-design/css-flexbox/apply-the-flex-direction-property-to-create-rows-in-the-tweet-embed/index.md

---
title: Apply the flex-direction Property to Create Rows in the Tweet Embed
localeTitle: 应用flex-direction属性在Tweet Embed中创建行
---
## 应用flex-direction属性在Tweet Embed中创建行

此挑战的目的是确保_页眉_和_页脚_的子元素排成一行。而默认的flex方向是一行。最好尽可能明确地说明你的造型。