78 lines
2.4 KiB
Markdown
78 lines
2.4 KiB
Markdown
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---
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id: 587d78ae367417b2b2512afd
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title: Use the flex-basis Property to Set the Initial Size of an Item
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challengeType: 0
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videoUrl: ''
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localeTitle: 使用flex-basis属性设置项的初始大小
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---
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## Description
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<section id="description"> <code>flex-basis</code>属性指定CSS在使用<code>flex-shrink</code>或<code>flex-grow</code>进行调整之前的项的初始大小。 <code>flex-basis</code>属性使用的单位与其他大小属性（ <code>px</code> ， <code>em</code> ， <code>%</code>等）相同。该值根据内容<code>auto</code>项目大小。 </section>
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## Instructions
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<section id="instructions">使用<code>flex-basis</code>设置框的初始大小。将CSS属性<code>flex-basis</code>添加到<code>#box-1</code>和<code>#box-2</code> 。给<code>#box-1</code>一个值为<code>10em</code> ， <code>#box-2</code>给一个值为<code>20em</code> 。 </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>元素应该具有<code>flex-basis</code>属性。'
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testString: 'assert($("#box-1").css("flex-basis") != "auto", "The <code>#box-1</code> element should have a <code>flex-basis</code> property.");'
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- text: '<code>#box-1</code>元素的<code>flex-basis</code>值应为<code>10em</code> 。'
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testString: 'assert(code.match(/#box-1\s*?{\s*?.*?\s*?.*?\s*?flex-basis:\s*?10em;/g), "The <code>#box-1</code> element should have a <code>flex-basis</code> value of <code>10em</code>.");'
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- text: '<code>#box-2</code>元素应该具有<code>flex-basis</code>属性。'
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testString: 'assert($("#box-2").css("flex-basis") != "auto", "The <code>#box-2</code> element should have the <code>flex-basis</code> property.");'
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- text: '<code>#box-2</code>元素的<code>flex-basis</code>值应为<code>20em</code> 。'
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testString: 'assert(code.match(/#box-2\s*?{\s*?.*?\s*?.*?\s*?flex-basis:\s*?20em;/g), "The <code>#box-2</code> element should have a <code>flex-basis</code> value of <code>20em</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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