freeCodeCamp/curriculum/challenges/japanese/01-responsive-web-design/css-flexbox/apply-the-flex-direction-pr...

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---
id: 587d78ab367417b2b2512af3
title: flex-direction プロパティを適用して埋め込みツイートに行を作成する
challengeType: 0
videoUrl: 'https://scrimba.com/p/pVaDAv/cJb8yuq'
forumTopicId: 301104
dashedName: apply-the-flex-direction-property-to-create-rows-in-the-tweet-embed
---
# --description--
埋め込みツイート例の `header``footer` には子要素があり、`flex-direction` プロパティを使用して行として配置することができます。 このプロパティは CSS に子要素を水平方向に配置するよう指示します。
# --instructions--
CSS プロパティ `flex-direction``header``footer` に追加し、値を `row` に設定してください。
# --hints--
`.follow-btn` がページ上に表示されている必要があります。 必ず広告ブロッカーなどの拡張機能をオフにしてください。
```js
assert($('.follow-btn').length > 0 && $('.follow-btn').css('display') !== 'none');
```
`header``flex-direction` プロパティを `row` に設定する必要があります。
```js
assert(code.match(/header\s*?{[^}]*?flex-direction:\s*?row;/g));
```
`footer``flex-direction` プロパティを `row` に設定する必要があります。
```js
assert(code.match(/footer\s*?{[^}]*?flex-direction:\s*?row;/g));
```
# --seed--
## --seed-contents--
```html
<style>
body {
font-family: Arial, sans-serif;
}
header {
display: flex;
}
header .profile-thumbnail {
width: 50px;
height: 50px;
border-radius: 4px;
}
header .profile-name {
display: flex;
margin-left: 10px;
}
header .follow-btn {
display: flex;
margin: 0 0 0 auto;
}
header .follow-btn button {
border: 0;
border-radius: 3px;
padding: 5px;
}
header h3, header h4 {
display: flex;
margin: 0;
}
#inner p {
margin-bottom: 10px;
font-size: 20px;
}
#inner hr {
margin: 20px 0;
border-style: solid;
opacity: 0.1;
}
footer {
display: flex;
}
footer .stats {
display: flex;
font-size: 15px;
}
footer .stats strong {
font-size: 18px;
}
footer .stats .likes {
margin-left: 10px;
}
footer .cta {
margin-left: auto;
}
footer .cta button {
border: 0;
background: transparent;
}
</style>
<header>
<img src="https://freecodecamp.s3.amazonaws.com/quincy-twitter-photo.jpg" alt="Quincy Larson's profile picture" class="profile-thumbnail">
<div class="profile-name">
<h3>Quincy Larson</h3>
<h4>@ossia</h4>
</div>
<div class="follow-btn">
<button>Follow</button>
</div>
</header>
<div id="inner">
<p>I meet so many people who are in search of that one trick that will help them work smart. Even if you work smart, you still have to work hard.</p>
<span class="date">1:32 PM - 12 Jan 2018</span>
<hr>
</div>
<footer>
<div class="stats">
<div class="Retweets">
<strong>107</strong> Retweets
</div>
<div class="likes">
<strong>431</strong> Likes
</div>
</div>
<div class="cta">
<button class="share-btn">Share</button>
<button class="retweet-btn">Retweet</button>
<button class="like-btn">Like</button>
</div>
</footer>
```
# --solutions--
```html
<style>
body {
font-family: Arial, sans-serif;
}
header {
display: flex;
flex-direction: row;
}
header .profile-thumbnail {
width: 50px;
height: 50px;
border-radius: 4px;
}
header .profile-name {
display: flex;
margin-left: 10px;
}
header .follow-btn {
display: flex;
margin: 0 0 0 auto;
}
header .follow-btn button {
border: 0;
border-radius: 3px;
padding: 5px;
}
header h3, header h4 {
display: flex;
margin: 0;
}
#inner p {
margin-bottom: 10px;
font-size: 20px;
}
#inner hr {
margin: 20px 0;
border-style: solid;
opacity: 0.1;
}
footer {
display: flex;
flex-direction: row;
}
footer .stats {
display: flex;
font-size: 15px;
}
footer .stats strong {
font-size: 18px;
}
footer .stats .likes {
margin-left: 10px;
}
footer .cta {
margin-left: auto;
}
footer .cta button {
border: 0;
background: transparent;
}
</style>
<header>
<img src="https://freecodecamp.s3.amazonaws.com/quincy-twitter-photo.jpg" alt="Quincy Larson's profile picture" class="profile-thumbnail">
<div class="profile-name">
<h3>Quincy Larson</h3>
<h4>@ossia</h4>
</div>
<div class="follow-btn">
<button>Follow</button>
</div>
</header>
<div id="inner">
<p>I meet so many people who are in search of that one trick that will help them work smart. Even if you work smart, you still have to work hard.</p>
<span class="date">1:32 PM - 12 Jan 2018</span>
<hr>
</div>
<footer>
<div class="stats">
<div class="Retweets">
<strong>107</strong> Retweets
</div>
<div class="likes">
<strong>431</strong> Likes
</div>
</div>
<div class="cta">
<button class="share-btn">Share</button>
<button class="retweet-btn">Retweet</button>
<button class="like-btn">Like</button>
</div>
</footer>
```