26. Review of HTML Tables

Table: <table>

Defines a table.

Column groups: <colgroup>, <col>

Groups one or more related columns together.

A <colgroup> may contain one or more <col>, or may use the span attribute to define the number of columns it covers.

A <col> can also be defined outside a <colgroup>.

Row groups: <thead>, <tfoot>, <tbody>

Contain one or more related rows (<tr>).

<thead> and <tfoot> must be defined before normal rows, and are always displayed at the top and bottom of the table, respectively.

There may be multiple <tbody> elements, for grouping related rows together.

Rows: <tr>

Should contain one or more cells.

Cells: <th> and <td>

Contain data for individual cells. The rowspan and colspan attributes can make a cell cover more than one row or column.

Avoid using HTML attributes align, valign, bgcolor, width, etc.; use CSS instead.