94 lines
2.3 KiB
Markdown
94 lines
2.3 KiB
Markdown
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---
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id: 587d781c367417b2b2512abf
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title: Decrease the Opacity of an Element
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challengeType: 0
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videoUrl: ''
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localeTitle: 降低元素的不透明度
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---
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## Description
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<section id="description"> CSS中的<code>opacity</code>属性用于调整不透明度，或相反，用于调整项目的透明度。 <blockquote>值1是不透明的，根本不透明。 <br>值0.5是半透明的。 <br>值0完全透明。 </blockquote>给定的值将应用于整个元素，无论是具有一定透明度的图像，还是文本块的前景色和背景色。 </section>
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## Instructions
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<section id="instructions">使用<code>links</code>类将锚标记的<code>opacity</code>设置为0.7以选择它们。 </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: 您的代码应通过选择<code>links</code>类将锚点标记上的<code>opacity</code>属性设置为0.7。
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testString: 'assert.approximately(parseFloat($(".links").css("opacity")), 0.7, 0.1, "Your code should set the <code>opacity</code> property to 0.7 on the anchor tags by selecting the class of <code>links</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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h4 {
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text-align: center;
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background-color: rgba(45, 45, 45, 0.1);
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padding: 10px;
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font-size: 27px;
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}
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p {
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text-align: justify;
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}
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.links {
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text-align: left;
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color: black;
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}
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#thumbnail {
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box-shadow: 0 10px 20px rgba(0,0,0,0.19), 0 6px 6px rgba(0,0,0,0.23);
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}
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.fullCard {
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width: 245px;
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border: 1px solid #ccc;
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border-radius: 5px;
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margin: 10px 5px;
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padding: 4px;
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}
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.cardContent {
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padding: 10px;
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}
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.cardText {
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margin-bottom: 30px;
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}
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</style>
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<div class="fullCard" id="thumbnail">
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<div class="cardContent">
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<div class="cardText">
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<h4>Alphabet</h4>
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<hr>
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<p><em>Google was founded by Larry Page and Sergey Brin while they were <u>Ph.D. students</u> at <strong>Stanford University</strong>.</em></p>
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</div>
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<div class="cardLinks">
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<a href="https://en.wikipedia.org/wiki/Larry_Page" target="_blank" class="links">Larry Page</a><br><br>
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<a href="https://en.wikipedia.org/wiki/Sergey_Brin" target="_blank" class="links">Sergey Brin</a>
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</div>
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</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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