freeCodeCamp/curriculum/challenges/english/01-responsive-web-design/applied-visual-design/decrease-the-opacity-of-an-...

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---
id: 587d781c367417b2b2512abf
title: Decrease the Opacity of an Element
challengeType: 0
videoUrl: 'https://scrimba.com/c/c7aKqu4'
---
## Description
<section id='description'>
The <code>opacity</code> property in CSS is used to adjust the opacity, or conversely, the transparency for an item.
<blockquote>A value of 1 is opaque, which isn't transparent at all.<br>A value of 0.5 is half see-through.<br>A value of 0 is completely transparent.</blockquote>
The value given will apply to the entire element, whether that's an image with some transparency, or the foreground and background colors for a block of text.
</section>
## Instructions
<section id='instructions'>
Set the <code>opacity</code> of the anchor tags to 0.7 using <code>links</code> class to select them.
</section>
## Tests
<section id='tests'>
```yml
tests:
- text: Your code should set the <code>opacity</code> property to 0.7 on the anchor tags by selecting the class of <code>links</code>.
testString: assert(/\.links\s*\{[^}]+opacity\s*:\s*0.7;/.test(code), 'Your code should set the <code>opacity</code> property to 0.7 on the anchor tags by selecting the class of <code>links</code>.');
```
</section>
## Challenge Seed
<section id='challengeSeed'>
<div id='html-seed'>
```html
<style>
h4 {
text-align: center;
background-color: rgba(45, 45, 45, 0.1);
padding: 10px;
font-size: 27px;
}
p {
text-align: justify;
}
.links {
text-align: left;
color: black;
}
#thumbnail {
box-shadow: 0 10px 20px rgba(0,0,0,0.19), 0 6px 6px rgba(0,0,0,0.23);
}
.fullCard {
width: 245px;
border: 1px solid #ccc;
border-radius: 5px;
margin: 10px 5px;
padding: 4px;
}
.cardContent {
padding: 10px;
}
.cardText {
margin-bottom: 30px;
}
</style>
<div class="fullCard" id="thumbnail">
<div class="cardContent">
<div class="cardText">
<h4>Alphabet</h4>
<hr>
<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>
</div>
<div class="cardLinks">
<a href="https://en.wikipedia.org/wiki/Larry_Page" target="_blank" class="links">Larry Page</a><br><br>
<a href="https://en.wikipedia.org/wiki/Sergey_Brin" target="_blank" class="links">Sergey Brin</a>
</div>
</div>
</div>
```
</div>
</section>
## Solution
<section id='solution'>
```js
// solution required
```
</section>