<colgroup>

<colgroup
align=center|left|right|char
char=char
charoff=n
class=type
dir=ltr|rtr
id=value
lang=language
span=n
style=style
title=text
valign=midddle|top|bottom
width=n
</colgroup>

Sets the properties of one or more columns. This tag is valid only in tables.

If the columns in a group of columns require varying properties, use <colgroup> in conjunction with one or more <col> tags to individually set the properties for the columns.

This tag affects how rules are drawn within a table when groups are specified with the rules attribute in the <table> tag. In this case, vertical rules are drawn between column groups rather than between individual columns.

Attributes

align=center|left|right

Specifies the horizontal alignment of text in the cells for the column group specified in the tag. The default is center.

char=char

A single character for the alignment of text in the column. The default value is the decimal point of the current language

charoff=n

Specifies the offset to the first occurrence of the alignment character. The attribute's value is a number in pixels or a percentage of the cell's width

class=type

Indicates the class to which the tag belongs. You can use the class attribute in a style sheet to create different styles that you want apply to a single HTML tag. For example, you might create three different styles for a <colgroup> tag. See Using the class attribute as a selector for more details.

dir=ltr|rtr

Specifies the direction of text. This can be left-to-right (ltr) or right-to-left (rtl). For example, English characters are presented left-to-right, Hebrew characters are presented right-to-left.

id=value

Specifies a unique name for the tag. No two tags can have the same id on a single page. The value must begin with a letter followed by any alphanumeric character, a hyphen, an underscore, a colon or a full stop. You use it to reference a unique style for a tag or to manipulate the tag with a script.

lang=language

Specifies which language the <code> tag uses. You can enter any valid ISO standard language abbreviation, for example, “en” for English, “de” for German and so on. For example, <span lang="es">hola! como esta?</span>.

This attribute helps search engines understand different languages as different languages rather than just misspelled English. It may also help spelling and grammar checkers and allow speech synthesizers to use language-dependent pronunciation rules.

spsn=n

Sets the number of consecutive columns that are in the group and for which the properties are set.

style=style

Specifies style information. See Style sheets for more information.

title=text

For information only. Some browsers display the title when you move the mouse over the tag (like a tool tip).

valign=middle|top|bottom

Specifies the vertical alignment of text within the cells specified in the columns. The default is middle.

width=n

Indicates the width of the columns in the column group.