75 lines
2.7 KiB
Markdown
75 lines
2.7 KiB
Markdown
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---
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id: 587d78ae367417b2b2512afe
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title: Use the flex Shorthand Property
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challengeType: 0
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videoUrl: ''
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localeTitle: 使用flex速记属性
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---
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## Description
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<section id="description">有一个快捷方式可以同时设置多个flex属性。通过使用<code>flex</code>属性，可以将<code>flex-grow</code> ， <code>flex-shrink</code>和<code>flex-basis</code>属性设置在一起。例如， <code>flex: 1 0 10px;</code>将项目设置为<code>flex-grow: 1;</code> ， <code>flex-shrink: 0;</code> ，和<code>flex-basis: 10px;</code> 。默认属性设置为<code>flex: 0 1 auto;</code> 。 </section>
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## Instructions
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<section id="instructions">将CSS属性<code>flex</code>添加到<code>#box-1</code>和<code>#box-2</code> 。给<code>#box-1</code>赋值，使<code>flex-grow</code>为2， <code>flex-shrink</code>为2， <code>flex-basis</code>为150px。给<code>#box-2</code>赋值，使<code>flex-grow</code>为1， <code>flex-shrink</code>为1，其<code>flex-basis</code>为150px。这些值将导致<code>#box-1</code>增长以在容器大于300px时以<code>#box-2</code>两倍速率填充额外空间，并在容器小于300px时以<code>#box-2</code>的速率缩小两倍。 300px是两个框的<code>flex-basis</code>值的组合大小。 </section>
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## Tests
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<section id='tests'>
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```yml
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tests:
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- text: '<code>#box-1</code>元素的<code>flex</code>属性应设置为2 2 150px。'
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testString: 'assert($("#box-1").css("flex-grow") == "2" && $("#box-1").css("flex-shrink") == "2" && $("#box-1").css("flex-basis") == "150px", "The <code>#box-1</code> element should have the <code>flex</code> property set to a value of 2 2 150px.");'
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- text: '<code>#box-2</code>元素的<code>flex</code>属性应设置为1 1 150px。'
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testString: 'assert($("#box-2").css("flex-grow") == "1" && $("#box-2").css("flex-shrink") == "1" && $("#box-2").css("flex-basis") == "150px", "The <code>#box-2</code> element should have the <code>flex</code> property set to a value of 1 1 150px.");'
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- text: '您的代码应该使用<code>#box-1</code>和<code>#box-2</code>的<code>flex</code>属性。'
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testString: 'assert(code.match(/flex:\s*?\d\s+?\d\s+?150px;/g).length == 2, "Your code should use the <code>flex</code> property for <code>#box-1</code> and <code>#box-2</code>.");'
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```
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</section>
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## Challenge Seed
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<section id='challengeSeed'>
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<div id='html-seed'>
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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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height: 200px;
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}
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#box-2 {
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background-color: orangered;
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height: 200px;
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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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</div>
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</section>
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## Solution
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<section id='solution'>
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```js
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// solution required
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```
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</section>
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