freeCodeCamp/curriculum/challenges/chinese/01-responsive-web-design/basic-css/use-clockwise-notation-to-s...

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Raw Blame History

id challengeType videoUrl forumTopicId title
bad87fee1348bd9aedf08826 0 https://scrimba.com/c/cB7mBS9 18346 使用顺时针方向指定元素的内边距

Description

如果不想每次都要分别声明padding-toppadding-rightpadding-bottompadding-left属性,可以把它们汇总在padding属性里面声明,如下: padding: 10px 20px 10px 20px; 这四个值按顺时针排序:上,右,下,左,并且设置的效果等同于特定声明每一个方向的padding

Instructions

按照顺时针顺序,给".blue-box" class的上内边距以及左内边距设置为40px,右内边距和下内边距则设置为20px

Tests

tests:
  - text: '<code>blue-box</code> class 的上内边距应为<code>40px</code>。'
    testString: assert($(".blue-box").css("padding-top") === "40px");
  - text: '<code>blue-box</code> class 的右内边距应为<code>20px</code>。'
    testString: assert($(".blue-box").css("padding-right") === "20px");
  - text: '<code>blue-box</code> class 的下内边距应为<code>20px</code>。'
    testString: assert($(".blue-box").css("padding-bottom") === "20px");
  - text: '<code>blue-box</code> class 的左内边距应为<code>40px</code>。'
    testString: assert($(".blue-box").css("padding-left") === "40px");
  - text: '你应该按照顺时针排序,汇总声明的方式来设置<code>blue-box</code>的<code>padding</code>值。'
    testString: const removeCssComments = str => str.replace(/\/\*[\s\S]+?\*\//g, '');assert(/\.blue-box\s*{[\s\S]*padding[\s]*:\s*\d+px\s+\d+px\s+\d+px\s+\d+px(;\s*[^}]+\s*}|;?\s*})/.test(removeCssComments($('style').text())));

Challenge Seed

<style>
  .injected-text {
    margin-bottom: -25px;
    text-align: center;
  }

  .box {
    border-style: solid;
    border-color: black;
    border-width: 5px;
    text-align: center;
  }

  .yellow-box {
    background-color: yellow;
    padding: 20px 40px 20px 40px;
  }
  
  .red-box {
    background-color: crimson;
    color: #fff;
    padding: 20px 40px 20px 40px;
  }

  .blue-box {
    background-color: blue;
    color: #fff;
  }
</style>
<h5 class="injected-text">margin</h5>

<div class="box yellow-box">
  <h5 class="box red-box">padding</h5>
  <h5 class="box blue-box">padding</h5>
</div>

Solution

// solution required