ee1e8abd87
* feat(tools): add seed/solution restore script * chore(curriculum): remove empty sections' markers * chore(curriculum): add seed + solution to Chinese * chore: remove old formatter * fix: update getChallenges parse translated challenges separately, without reference to the source * chore(curriculum): add dashedName to English * chore(curriculum): add dashedName to Chinese * refactor: remove unused challenge property 'name' * fix: relax dashedName requirement * fix: stray tag Remove stray `pre` tag from challenge file. Signed-off-by: nhcarrigan <nhcarrigan@gmail.com> Co-authored-by: nhcarrigan <nhcarrigan@gmail.com>
139 lines
2.8 KiB
Markdown
139 lines
2.8 KiB
Markdown
---
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id: 587d78ad367417b2b2512afa
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title: 使用 flex-wrap 属性包裹一行或一列
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challengeType: 0
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videoUrl: 'https://scrimba.com/p/pVaDAv/cQv9ZtG'
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forumTopicId: 301114
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dashedName: use-the-flex-wrap-property-to-wrap-a-row-or-column
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---
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# --description--
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CSS flexbox 有一个把 flex 子元素拆分为多行（或多列）的特性。默认情况下，flex 容器会调整项目大小，把它们都塞到一起。对于行来说，所有项目都会在一条直线上。
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不过，使用 `flex-wrap` 属性可以使项目换行展示。这意味着多出来的子元素会被移到新的行或列。换行发生的断点由子元素和容器的大小决定。
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换行方向的可选值有这些：
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<ul><li><code>nowrap</code>：默认值，不换行。</li><li><code>wrap</code>：行从上到下排，列从左到右排。</li><li><code>wrap-reverse</code>：行从下到上排，列从右到左排。</li></ul>
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# --instructions--
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现在的布局中，一行里面的元素太多了。请为 `#box-container` 元素添加 CSS 属性 `flex-wrap`，把将其属性值设为 `wrap`。
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# --hints--
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`#box-container` 元素应具有 `flex-wrap` 属性，其属性值应为 `wrap`。
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```js
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assert($('#box-container').css('flex-wrap') == 'wrap');
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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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background: gray;
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display: flex;
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height: 100%;
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}
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#box-1 {
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background-color: dodgerblue;
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width: 25%;
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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: 25%;
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height: 50%;
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}
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#box-3 {
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background-color: violet;
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width: 25%;
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height: 50%;
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}
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#box-4 {
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background-color: yellow;
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width: 25%;
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height: 50%;
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}
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#box-5 {
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background-color: green;
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width: 25%;
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height: 50%;
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}
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#box-6 {
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background-color: black;
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width: 25%;
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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 id="box-3"></div>
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<div id="box-4"></div>
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<div id="box-5"></div>
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<div id="box-6"></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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background: gray;
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display: flex;
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height: 100%;
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flex-wrap: wrap;
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}
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#box-1 {
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background-color: dodgerblue;
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width: 25%;
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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: 25%;
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height: 50%;
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}
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#box-3 {
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background-color: violet;
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width: 25%;
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height: 50%;
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}
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#box-4 {
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background-color: yellow;
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width: 25%;
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height: 50%;
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}
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#box-5 {
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background-color: green;
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width: 25%;
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height: 50%;
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}
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#box-6 {
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background-color: black;
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width: 25%;
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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 id="box-3"></div>
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<div id="box-4"></div>
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<div id="box-5"></div>
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<div id="box-6"></div>
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</div>
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```
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