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CSS

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HTML 

              
                <h1>Data Table Accessibility Tests 2024</h1>

<p>This Codepen presents four types of tables I've tested to understand the state of data table accessibility in 2024. </p>

<ul>
  <li> <code>table</code> as it should be </li>
  <li> <code>table</code> with <code>display: grid</code> </li>
  <li> <code>div</code> with <code>role="table"</code></li>
  <li> <code>div</code> with <code>role="grid"</code></li>
</ul>

<p>Please read <a href="https://zellwk.com/blog/data-table-accessibility-2024">this article</a> for more information about the test and my findings.</p>


<h2>Normal Table</h2>

  <table>
    <thead style="">
      <tr class="bg-yellow-900 text-white">
        <th>Name</th>
        <th>Number of Shares</th>
      </tr>
    </thead>

    <tbody>
      <tr>
        <th class="bg-orange-100 col-span-2" colspan="2"> SGD </th>
      </tr>
      <tr>
        <td>Alexander</td>
        <td>500</td>
      </tr>
      <tr>
        <td>Perseus</td>
        <td>500</td>
      </tr>
    </tbody>

    <tbody>
      <tr>
        <th class="bg-orange-100 col-span-2" colspan="2"> USD </th>
      </tr>
      <tr>
        <td>Alexander</td>
        <td>500</td>
      </tr>
      <tr>
        <td>Perseus</td>
        <td>500</td>
      </tr>
    </tbody>
  </table>

  <h2>Normal Table with Display Grid</h2>

  <table class="Grid grid-cols-[1fr_1fr_auto]">
    <thead>
      <tr class="bg-yellow-900 text-white">
        <th>Name</th>
        <th>Number of Shares</th>
      </tr>
    </thead>

    <tbody>
      <tr>
        <th class="bg-orange-100 col-span-2" colspan="2"> SGD </th>
      </tr>
      <tr>
        <td>Alexander</td>
        <td>500</td>
      </tr>
      <tr>
        <td>Perseus</td>
        <td>500</td>
      </tr>
    </tbody>

    <tbody>
      <tr>
        <th class="bg-orange-100 col-span-2" colspan="2"> USD </th>
      </tr>
      <tr>
        <td>Alexander</td>
        <td>500</td>
      </tr>
      <tr>
        <td>Perseus</td>
        <td>500</td>
      </tr>
    </tbody>
  </table>

  <h2>Role=table (Without rowgroup)</h2>

  <div role="table" class="Grid grid-cols-[repeat(2,_1fr)_auto]">
    <div role="row" class="bg-yellow-900 text-white">
      <div role="columnheader">Name</div>
      <div role="columnheader">Number of Shares</div>
    </div>
    <div role="row">
      <div role="rowheader" class="bg-orange-100 col-span-2" aria-colspan="2">
        SGD
      </div>
    </div>
    <div role="row">
      <div role="cell">Alexander</div>
      <div role="cell">500</div>
    </div>
    <div role="row">
      <div role="cell">Perseus</div>
      <div role="cell">500</div>
    </div>
    <div role="row">
      <div role="rowheader" class="bg-orange-100 col-span-2" aria-colspan="2">
        USD
      </div>
    </div>
    <div role="row">
      <div role="cell">Alexander</div>
      <div role="cell">500</div>
    </div>
    <div role="row">
      <div role="cell">Perseus</div>
      <div role="cell">500</div>
    </div>
  </div>

  <h2>Role=table (With rowgroup)</h2>

  <div role="table" class="Grid grid-cols-[repeat(2,_1fr)_auto]">
    <div role="rowgroup">
      <div role="row" class="bg-yellow-900 text-white">
        <div role="columnheader">Name</div>
        <div role="columnheader">Number of Shares</div>
      </div>
    </div>

    <div role="rowgroup">
      <div role="row">
        <div role="rowheader" class="bg-orange-100 col-span-2" aria-colspan="2">
          SGD
        </div>
      </div>
      <div role="row">
        <div role="cell">Alexander</div>
        <div role="cell">500</div>
      </div>
      <div role="row">
        <div role="cell">Perseus</div>
        <div role="cell">500</div>
      </div>
    </div>
    <div role="rowgroup">
      <div role="row">
        <div role="rowheader" class="bg-orange-100 col-span-2" aria-colspan="2">
          USD
        </div>
      </div>
      <div role="row">
        <div role="cell">Alexander</div>
        <div role="cell">500</div>
      </div>
      <div role="row">
        <div role="cell">Perseus</div>
        <div role="cell">500</div>
      </div>
    </div>
  </div>

  <h2>Role=grid (Without rowgroup)</h2>

  <div role="grid" class="Grid grid-cols-[repeat(2,_1fr)_auto]">
    <div role="row" class="bg-yellow-900 text-white">
      <div role="columnheader">Name</div>
      <div role="columnheader">Number of Shares</div>
    </div>

    <div role="row">
      <div role="rowheader" class="bg-orange-100 col-span-2" aria-colspan="2">
        SGD
      </div>
    </div>
    <div role="row">
      <div role="gridcell">Alexander</div>
      <div role="gridcell">500</div>
    </div>
    <div role="row">
      <div role="gridcell">Perseus</div>
      <div role="gridcell">500</div>
    </div>
    <div role="row">
      <div role="rowheader" class="bg-orange-100 col-span-2" aria-colspan="2">
        USD
      </div>
    </div>
    <div role="row">
      <div role="gridcell">Alexander</div>
      <div role="gridcell">500</div>
    </div>
    <div role="row">
      <div role="gridcell">Perseus</div>
      <div role="gridcell">500</div>
    </div>
  </div>
!

CSS 

              
                // Basic table styles
table {
  width: 100%;
  border-collapse: collapse;

  th:not([scope='row']) {
    border-top: 1px solid var(--border-color);
    border-bottom: 1px solid var(--border-color);
  }

  th[scope='row'] {
    border-right: 1px solid var(--border-color);
  }

  th,
  td {
    text-align: left;
    padding: 0.375rem 0.5rem;
  }

  tr:nth-child(2n + 3) {
    background-color: var(--alt-row-color);
  }
}

// Table with CSS Grid
// Grid Template Columns is a MUST-PROVIDE property
:where(.Grid:is([role='table'], [role='grid'], table)) {
  display: grid;
  width: 100%;
}

// Thead, Tbody, Tfoot
:where(.Grid :is([role='rowgroup'], thead, tbody, tfoot)) {
  display: contents;
}

// Tr
:where(.Grid :is([role='row'], tr)) {
  grid-column: 1/-1;
  display: grid;
  grid-template-columns: subgrid;
  grid-template-rows: subgrid;

  &:nth-child(2n + 3) {
    background-color: var(--alt-row-color);
  }
}

// Th
:where(.Grid :is([role='columnheader'], th)) {
  border-top: 1px solid var(--border-color);
  border-bottom: 1px solid var(--border-color);
  font-weight: bold;
}

// Th
// Maybe border-right is a bit too much
:where(.Grid :is([role='rowheader'], th[scope='row'])) {
  // border-right: 1px solid var(--border-color);
  font-weight: bold;
}

// Td
:where(.Grid :is([role='cell'], [role='gridcell'], td)) {
  display: grid;
  align-items: center;
}

// Both Th and Td
:where(
    .Grid
      :is(
        [role='columnheader'],
        [role='rowheader'],
        [role='cell'],
        [role='gridcell'],
        th,
        td
      )
  ) {
  padding: 0.25rem 0.5rem;
}

// Presentational purposes for this Codepen
// Just using !important to quickly override some Tailwind default values here 🙃
body {
  padding: 0.5rem;
}

h1 {
  font-weight: bold !important; 
  font-size: 3em !important;
  margin-bottom: 1rem ;
  margin-top: 1.5rem ;
}

h2 {
  font-weight: bold !important; 
  font-size: 2em !important;
  margin-bottom: 1rem ;
  margin-top: 1.5rem ;
}

p + *, 
* + p{
  margin-top: 1em !important;
}

a {
  color: blue;
  text-decoration: underline;
}

ul li {
  padding-left: 1rem;
  list-style: disc;
  list-style-position: inside;
}

code {
  background-color: #eaeaea;
}
!

JS
!
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