freeCodeCamp/curriculum/challenges/chinese-traditional/14-responsive-web-design-22/learn-the-css-box-model-by-.../60a3e3396c7b40068ad6997f.md

1.6 KiB

id title challengeType dashedName
60a3e3396c7b40068ad6997f 步驟 22 0 step-22

--description--

在畫布的頂部、底部、左側和右側添加 1 個像素的填充將其尺寸更改爲 502 像素 x 602 像素。

padding 屬性替換爲 overflow 設置爲 hidden - 將畫布更改回其原始尺寸。

--hints--

應該從 .canvas 選擇器中刪除 padding 屬性。

const canvasPadding = new __helpers.CSSHelp(document).getStyle('.canvas').getPropertyValue('padding');
assert(!canvasPadding);

應該將 overflow 屬性設置爲 hidden

const hasOverflow = new __helpers.CSSHelp(document).getCSSRules().some(x => x.style.overflow === 'hidden');
assert(hasOverflow);

.canvas 元素的 overflow 值應爲 hidden

const canvasOverflow = new __helpers.CSSHelp(document).getStyle('.canvas')?.getPropertyValue('overflow');
assert(canvasOverflow === 'hidden')

--seed--

--seed-contents--

.canvas {
  width: 500px;
  height: 600px;
  background-color: #4d0f00;
--fcc-editable-region--
  padding: 1px;
--fcc-editable-region--
}

.frame {
  border: 50px solid black;
  width: 500px;
  padding: 50px;
  margin: 20px auto;
}

.one {
  width: 425px;
  height: 150px;
  background-color: #efb762;
  margin: 20px auto;
}
<!DOCTYPE html>
<html lang="en">
  <head>
    <meta charset="UTF-8">
    <title>Rothko Painting</title>
    <link href="./styles.css" rel="stylesheet">
  </head>
  <body>
    <div class="frame">
      <div class="canvas">
        <div class="one"></div>
      </div>
    </div>
  </body>
</html>