freeCodeCamp/curriculum/challenges/chinese/01-responsive-web-design/applied-visual-design/add-a-box-shadow-to-a-card-...

3.7 KiB

id title challengeType videoUrl forumTopicId dashedName
587d781b367417b2b2512abe 给卡片元素添加 box-shadow 0 https://scrimba.com/c/cvVZdUd 301031 add-a-box-shadow-to-a-card-like-element

--description--

box-shadow 属性用来给元素添加阴影,该属性值是由逗号分隔的一个或多个阴影列表。

box-shadow 属性的阴影依次由下面这些值描述:

  • offset-x 阴影的水平偏移量;
  • offset-y 阴影的垂直偏移量;
  • blur-radius 模糊半径;
  • spread-radius 阴影扩展半径;
  • color

其中 blur-radiusspread-radius 是可选的。

可以通过逗号分隔每个 box-shadow 元素的属性来添加多个 box-shadow。

如下为添加了模糊效果的例子,它使用了透明度较高的黑色作为阴影:

box-shadow: 0 10px 20px rgba(0,0,0,0.19), 0 6px 6px rgba(0,0,0,0.23);

--instructions--

元素现在有一个 thumbnail id。 在这个选择器中,使用上面的示例 CSS 值在卡片上加一个 box-shadow

--hints--

应该给 id 为 thumbnail 的元素添加 box-shadow 属性。

assert(code.match(/#thumbnail\s*?{\s*?box-shadow/g));

box-shadow 属性值应该是题目说明中指定的 CSS 值。

assert(
  code.match(
    /box-shadow:\s*?0\s+?10px\s+?20px\s+?rgba\(\s*?0\s*?,\s*?0\s*?,\s*?0\s*?,\s*?0?\.19\)\s*?,\s*?0\s+?6px\s+?6px\s+?rgba\(\s*?0\s*?,\s*?0\s*?,\s*?0\s*?,\s*?0?\.23\)/gi
  )
);

--seed--

--seed-contents--

<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;
  }



  .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>

--solutions--

<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>