ee1e8abd87
* feat(tools): add seed/solution restore script * chore(curriculum): remove empty sections' markers * chore(curriculum): add seed + solution to Chinese * chore: remove old formatter * fix: update getChallenges parse translated challenges separately, without reference to the source * chore(curriculum): add dashedName to English * chore(curriculum): add dashedName to Chinese * refactor: remove unused challenge property 'name' * fix: relax dashedName requirement * fix: stray tag Remove stray `pre` tag from challenge file. Signed-off-by: nhcarrigan <nhcarrigan@gmail.com> Co-authored-by: nhcarrigan <nhcarrigan@gmail.com>
141 lines
2.9 KiB
Markdown
141 lines
2.9 KiB
Markdown
---
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id: bad87fee1348bd9aedf08826
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title: 使用顺时针方向指定元素的内边距
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challengeType: 0
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videoUrl: 'https://scrimba.com/c/cB7mBS9'
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forumTopicId: 18346
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dashedName: use-clockwise-notation-to-specify-the-padding-of-an-element
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---
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# --description--
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如果不想每次都要分别声明 `padding-top`、`padding-right`、`padding-bottom`、`padding-left` 属性，可以把它们汇总在 `padding` 属性里面一并声明，像是这样：
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`padding: 10px 20px 10px 20px;`
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这四个值按顺时针排序：上、右、下、左，并且设置的效果等同于分别声明每一个方向的 `padding`。
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# --instructions--
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按照顺时针顺序，将 class 为 "blue-box" 的元素的上内边距以及左内边距设置为 `40px`，右内边距和下内边距设置为 `20px`。
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# --hints--
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class 为 `blue-box` 的元素的上内边距应为 `40px`。
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```js
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assert($('.blue-box').css('padding-top') === '40px');
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```
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class 为 `blue-box` 的元素的右内边距应为 `20px`。
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```js
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assert($('.blue-box').css('padding-right') === '20px');
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```
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class 为 `blue-box` 的元素的下内边距应为 `20px`。
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```js
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assert($('.blue-box').css('padding-bottom') === '20px');
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```
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class 为 `blue-box` 的元素的左内边距应为 `20px`。
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```js
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assert($('.blue-box').css('padding-left') === '40px');
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```
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你应该按照顺时针排序，汇总声明的方式来设置 `blue-box` 的 `padding` 值。
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```js
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const removeCssComments = (str) => str.replace(/\/\*[\s\S]+?\*\//g, '');
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assert(
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/\.blue-box\s*{[\s\S]*padding[\s]*:\s*\d+px\s+\d+px\s+\d+px\s+\d+px(;\s*[^}]+\s*}|;?\s*})/.test(
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removeCssComments($('style').text())
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)
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);
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```
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# --seed--
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## --seed-contents--
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```html
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<style>
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.injected-text {
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margin-bottom: -25px;
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text-align: center;
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}
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.box {
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border-style: solid;
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border-color: black;
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border-width: 5px;
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text-align: center;
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}
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.yellow-box {
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background-color: yellow;
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padding: 20px 40px 20px 40px;
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}
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.red-box {
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background-color: crimson;
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color: #fff;
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padding: 20px 40px 20px 40px;
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}
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.blue-box {
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background-color: blue;
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color: #fff;
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}
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</style>
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<h5 class="injected-text">margin</h5>
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<div class="box yellow-box">
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<h5 class="box red-box">padding</h5>
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<h5 class="box blue-box">padding</h5>
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</div>
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```
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# --solutions--
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```html
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<style>
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.injected-text {
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margin-bottom: -25px;
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text-align: center;
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}
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.box {
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border-style: solid;
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border-color: black;
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border-width: 5px;
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text-align: center;
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}
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.yellow-box {
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background-color: yellow;
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padding: 20px 40px 20px 40px;
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}
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.red-box {
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background-color: crimson;
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color: #fff;
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padding: 20px 40px 20px 40px;
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}
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.blue-box {
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background-color: blue;
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color: #fff;
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padding: 40px 20px 20px 40px;
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}
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</style>
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<h5 class="injected-text">margin</h5>
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<div class="box yellow-box">
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<h5 class="box red-box">padding</h5>
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<h5 class="box blue-box">padding</h5>
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</div>
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```
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