freeCodeCamp/curriculum/challenges/chinese-traditional/14-responsive-web-design-22/learn-more-about-css-pseudo.../620167374bb8b4455cd11125.md

6.0 KiB

id title challengeType dashedName
620167374bb8b4455cd11125 步驟 40 0 step-40

--description--

表格標題的最後一部分是年份。 創建一個 #years 選擇器,並啓用 flexbox。 將內容對齊到 flex 方向的末尾,並使元素具有粘性。 使用 top: 0 將其固定到其容器的頂部。

--hints--

應該有一個 #years 選擇器。

assert(new __helpers.CSSHelp(document).getStyle('#years'));

#years 選擇器應該有一個 display 屬性設置爲 flex

assert(new __helpers.CSSHelp(document).getStyle('#years')?.getPropertyValue('display') === 'flex');

#years 選擇器應該將 justify-content 屬性設置爲 flex-end

assert(new __helpers.CSSHelp(document).getStyle('#years')?.getPropertyValue('justify-content') === 'flex-end');

#years 選擇器應該有一個 position 屬性設置爲 sticky

assert(new __helpers.CSSHelp(document).getStyle('#years')?.getPropertyValue('position') === 'sticky');

#years 選擇器應該有一個 top 屬性設置爲 0

assert(new __helpers.CSSHelp(document).getStyle('#years')?.getPropertyValue('top') === '0px');

--seed--

--seed-contents--

<!DOCTYPE html>
<html lang="en">
  <head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Balance Sheet</title>
    <link rel="stylesheet" href="./styles.css">
  </head>
  <body>
    <main>
      <section>
        <h1>
          <span class="flex">
            <span>AcmeWidgetCorp</span>
            <span>Balance Sheet</span>
          </span>
        </h1>
        <div id="years" aria-hidden="true">
          <span class="year">2019</span>
          <span class="year">2020</span>
          <span class="year">2021</span>
        </div>
        <div class="table-wrap">
          <table>
            <caption>Assets</caption>
            <thead>
              <tr>
                <td></td>
                <th><span class="sr-only year">2019</span></th>
                <th><span class="sr-only year">2020</span></th>
                <th class="current"><span class="sr-only year">2021</span></th>
              </tr>
            </thead>
            <tbody>
              <tr class="data">
                <th>Cash <span class="description">This is the cash we currently have on hand.</span></th>
                <td>$25</td>
                <td>$30</td>
                <td class="current">$28</td>
              </tr>
              <tr class="data">
                <th>Checking <span class="description">Our primary transactional account.</span></th>
                <td>$54</td>
                <td>$56</td>
                <td class="current">$53</td>
              </tr>
              <tr class="data">
                <th>Savings <span class="description">Funds set aside for emergencies.</span></th>
                <td>$500</td>
                <td>$650</td>
                <td class="current">$728</td>
              </tr>
              <tr class="total">
                <th>Total <span class="sr-only">Assets</span></th>
                <td>$579</td>
                <td>$736</td>
                <td class="current">$809</td>
              </tr>
            </tbody>
          </table>
          <table>
            <caption>Liabilities</caption>
            <thead>
              <tr>
              <td></td>
              <th><span class="sr-only">2019</span></th>
              <th><span class="sr-only">2020</span></th>
              <th><span class="sr-only">2021</span></th>
              </tr>
            </thead>
            <tbody>
              <tr class="data">
                <th>Loans <span class="description">The outstanding balance on our startup loan.</span></th>
                <td>$500</td>
                <td>$250</td>
                <td class="current">$0</td>
              </tr>
              <tr class="data">
                <th>Expenses <span class="description">Annual anticipated expenses, such as payroll.</span></th>
                <td>$200</td>
                <td>$300</td>
                <td class="current">$400</td>
              </tr>
              <tr class="data">
                <th>Credit <span class="description">The outstanding balance on our credit card.</span></th>
                <td>$50</td>
                <td>$50</td>
                <td class="current">$75</td>
              </tr>
              <tr class="total">
                <th>Total <span class="sr-only">Liabilities</span></th>
                <td>$750</td>
                <td>$600</td>
                <td class="current">$475</td>
              </tr>
            </tbody>
          </table>
          <table>
            <caption>Net Worth</caption>
            <thead>
              <tr>
              <td></td>
              <th><span class="sr-only">2019</span></th>
              <th><span class="sr-only">2020</span></th>
              <th><span class="sr-only">2021</span></th>
              </tr>
            </thead>
            <tbody>
              <tr class="total">
                <th>Total <span class="sr-only">Net Worth</span></th>
                <td>$-171</td>
                <td>$136</td>
                <td class="current">$334</td>
              </tr>
            </tbody>
          </table>
        </div>
      </section>
    </main>
  </body>
</html>
span[class~="sr-only"] {
  border: 0;
  clip: rect(1px, 1px, 1px, 1px);
  clip-path: inset(50%);
  -webkit-clip-path: inset(50%);
  height: 1px;
  width: 1px;
  position: absolute;
  overflow: hidden;
  white-space: nowrap;
  padding: 0;
  margin: -1px;
}

html {
  box-sizing: border-box;
}

body {
  font-family: sans-serif;
  color: #0a0a23;
}

h1 {
  max-width: 37.25rem;
  margin: 0 auto;
  padding: 1.5rem 1.25rem;
}

h1 .flex {
  display: flex;
  flex-direction: column-reverse;
  gap: 1rem;
}

h1 .flex span:first-of-type {
  font-size: 0.7em;
}

h1 .flex span:last-of-type {
  font-size: 1.2em;
}

section {
  max-width: 40rem;
  margin: 0 auto;
  border: 2px solid #d0d0d5;
}

--fcc-editable-region--

--fcc-editable-region--