HTML Table, colgroup, col

By Xah Lee. Date: . Last updated: .

HTML table has a <colgroup> tag. It is used to indicate that several columns are a group.

<colgroup> has no effect on the rendering of the table, but is useful together with CSS to color columns (instead of adding a style to every td tag). [see CSS Basics]


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2,1 2,2 2,3 2,4 2,5 2,6 2,7 2,8 2,9

Here's the source code:

<table border="1">
<colgroup span="1" style="background-color:silver"></colgroup>
<colgroup span="3" style="background-color:aqua"></colgroup>
<colgroup span="2" style="background-color:yellow"></colgroup>
<colgroup span="3" style="background-color:gray"></colgroup>


The colgroup tag must come before any {tr, thead, tbody, tfoot}. [see HTML Table, thead, tbody, tfoot]

Using 「col」 tag

Alternatively, you can also use the col tag instead of <colgroup span="…">.

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2,1 2,2 2,3 2,4 2,5 2,6 2,7 2,8 2,9

Here's the relevant source code:

<colgroup style="background-color:silver"><col span="1" /></colgroup>
<colgroup style="background-color:aqua"><col span="3" /></colgroup>
<colgroup style="background-color:yellow"><col span="2" /></colgroup>
<colgroup style="background-color:gray"><col span="3" /></colgroup>

The col tag must always be used inside colgroup.

Alternatively, you can just repeat the col tag instead of using the span attribute. For example, write:

<colgroup><col /><col /></colgroup>

instead of:

<colgroup><col span="2" /></colgroup>

Browser Support

The colgroup and col tags are supported in all major browsers as of .

HTML Table

  1. HTML Table Examples
  2. HTML Table, thead, tbody, tfoot
  3. HTML Table, colgroup, col
  4. Styling HTML Table with CSS
  5. CSS: 3 Columns Page Layout
  6. Pure CSS Table
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