What is the reason for the absence of padding in table elements?

I have a question about padding in tables. When I try to apply padding to thead or tr elements, it doesn't seem to work. The only way I can get padding to show up is by applying it directly to th or td elements. Is there a reason for this? And is there an easy way to add padding to the entire thead or tr without having to target each individual th and td?

<table>
    <thead>
        <tr>
            <th>Destination</th>
            <th>Size</th>
            <th>Home Value</th>
        </tr>
    </thead>
    <tbody>
        <tr>
            <td>test 1</td>
            <td>test 2</td>
            <td>test 3</td>
        </tr>
    </tbody>
</table>

As you can see, even with the padding applied to the thead, it doesn't show up.

table {
    width: 100%;
}

thead {
    text-align: left;
    background-color: yellow;
    padding: 10px;
}

Click here for an example on jsFiddle

Answer №2

Consider moving the padding to the th element instead. It is generally recommended to apply padding to the th or td elements based on the specific situation.

thead th {
  padding: 10px;
}

Answer №3

Check out the important aspect of CSS2.1: Tables

To understand better, refer to this diagram: table layers. The use of padding is limited to the entire table, th, and td cells. Don't forget about caption too. Applying padding to other layers can complicate the table layout algorithms.

Explore more properties by checking out this fiddle: http://jsfiddle.net/QB97d/1/.

  • border-spacing: 8px 10px; acts like a margin around each table cell. Remove it using border-collapse: collapse;
  • table-layout: fixed; triggers a different algorithm for rendering widths as specified, ignoring the content quantity in each cell.
  • border provides space around elements, distinct from padding
  • empty-cells: hide may lead to unique behavior

Not covered in this fiddle:

  • Experimenting with selectors to target the four corners of a table in IE9+ using thead element and various cell types in each corner (can you find all 4?):

    • thead th:first-child, thead td:first-child
      ,
    • thead th:last-child, thead td:last-child
      ,
    • tbody:last-child tr:last-child th:first-child, tbody:last-child tr:last-child td:first-child
    • tbody:last-child tr:last-child th:last-child, tbody:last-child tr:last-child td:last-child
  • box-sizing: border-box (including vendor prefixes) ensures accurate calculation of cell widths considering padding and border widths, similar to IE6 in Quirks mode, ironically.

Answer №4

Creating Space between thead and tbody

Regrettably, adding padding to elements like thead, tbody, and tr is not supported.

However, you can increase the space between thead and tbody by targeting the cells in the first row of the table body:

tbody tr:first-child td {
    padding-top: 2.5ex;
}

This approach helps in maintaining the visual integrity of any header divisions.

Answer №5

When styling thead in CSS, remember that the "padding" attribute is not supported. To apply CSS to thead, use the following modifications:

thead tr th {
    text-align: left;
    background-color: yellow;
    padding: 10px;
}

Alternatively, you can use:

th {
    text-align: left;
    background-color: yellow;
    padding: 10px;
}

Answer №6

When you paddle left and right, it will always work for td or th as well.

However, when it comes to padding-top and padding-bottom, you are essentially asking the td (or th) to increase its height. This raises questions about what will happen to its siblings.

Therefore, in order for padding top or bottom to be effective, you must apply it to the parent element, which is the row of cells.

Answer №7

Tags like <thead> and <tfoot> are not meant to populate the table, but to contain other elements within it. To clarify: If you want to add a header to your table, you should not insert it in <table>, instead place it inside <thead>. The same goes for <tbody>, if you want to populate data inside a table, insert them inside <tbody>.

I hope this response helps clarify your question.

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