87 lines
1.8 KiB
Markdown
87 lines
1.8 KiB
Markdown
---
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id: 587d78ab367417b2b2512af2
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title: 使用 flex-direction 屬性創建一個行
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challengeType: 0
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videoUrl: 'https://scrimba.com/p/pVaDAv/cBEkbfJ'
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forumTopicId: 301110
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dashedName: use-the-flex-direction-property-to-make-a-row
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---
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# --description--
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給元素添加 `display: flex` 屬性可以讓它變成 flex 容器， 然後可以讓元素的項目排列成行或列。 只要給父元素添加 `flex-direction` 屬性，並把屬性值設置爲 row 或 column，即可橫向排列或縱向排列它的所有子元素。 創建一行將使子項水平對齊，創建一列將使子項垂直對齊。
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`flex-direction` 的其他可選值還有 `row-reverse` 和 `column-reverse`。
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**注意：** `flex-direction` 的默認值爲 `row`。
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# --instructions--
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請爲 `#box-container` 添加 CSS 屬性 `flex-direction`，將其值設爲 `row-reverse`。
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# --hints--
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`#box-container` 元素應有 `flex-direction` 屬性，其屬性值應爲 `row-reverse`。
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```js
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assert($('#box-container').css('flex-direction') == 'row-reverse');
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```
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# --seed--
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## --seed-contents--
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```html
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<style>
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#box-container {
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display: flex;
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height: 500px;
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}
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#box-1 {
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background-color: dodgerblue;
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width: 50%;
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height: 50%;
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}
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#box-2 {
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background-color: orangered;
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width: 50%;
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height: 50%;
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}
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</style>
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<div id="box-container">
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<div id="box-1"></div>
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<div id="box-2"></div>
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</div>
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```
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# --solutions--
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```html
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<style>
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#box-container {
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display: flex;
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height: 500px;
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flex-direction: row-reverse;
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}
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#box-1 {
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background-color: dodgerblue;
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width: 50%;
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height: 50%;
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}
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#box-2 {
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background-color: orangered;
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width: 50%;
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height: 50%;
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}
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</style>
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<div id="box-container">
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<div id="box-1"></div>
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<div id="box-2"></div>
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</div>
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```
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