Html table group css

: The Table Column Group element

The HTML element defines a group of columns within a table.

Try it

Attributes

This element’s attributes include the global attributes.

This attribute contains a positive integer indicating the number of consecutive columns the element spans. If not present, its default value is 1 .

The span attribute is not permitted if there are one or more elements within the .

Deprecated attributes

The following attributes are deprecated and should not be used. They are documented below for reference when updating existing code and for historical interest only.

This enumerated attribute specifies how horizontal alignment of each column cell content will be handled. Possible values are:

• left , aligning the content to the left of the cell
• center , centering the content in the cell
• right , aligning the content to the right of the cell
• justify , inserting spaces into the textual content so that the content is justified in the cell
• char , aligning the textual content on a special character with a minimal offset, defined by the char and charoff attributes.

If this attribute is not set, the left value is assumed. The descendant elements may override this value using their own align attribute.

If the table doesn’t use a colspan attribute, use one td:nth-child(an+b) CSS selector per column, where ‘a’ is the total number of the columns in the table and ‘b’ is the ordinal position of this column in the table. Only after this selector the text-align property can be used.

If the table does use a colspan attribute, the effect can be achieved by combining adequate CSS attribute selectors like [colspan=n] , though this is not trivial.

The background color of the table. It is a 6-digit hexadecimal RGB code, prefixed by a ‘ # ‘. One of the predefined color keywords can also be used.

To achieve a similar effect, use the CSS background-color property.

This attribute specifies the alignment of the content in a column group to a character. Typical values for this include a period (.) when attempting to align numbers or monetary values. If align is not set to char , this attribute is ignored, though it will still be used as the default value for the align of the which are members of this column group.

This attribute is used to indicate the number of characters to offset the column data from the alignment character specified by the char attribute.

This attribute specifies the vertical alignment of the text within each cell of the column. Possible values for this attribute are:

• baseline , which will put the text as close to the bottom of the cell as it is possible, but align it on the baseline of the characters instead of the bottom of them. If characters are all of the size, this has the same effect as bottom .
• bottom , which will put the text as close to the bottom of the cell as it is possible;
• middle , which will center the text in the cell;
• and top , which will put the text as close to the top of the cell as it is possible.

Note: Do not try to set the vertical-align property on a selector giving a element. Because elements are not descendant of the element, they won’t inherit it.

If the table doesn’t use a colspan attribute, use the td:nth-child(an+b) CSS selector per column, where ‘a’ is the total number of the columns in the table and ‘b’ is the ordinal position of the column in the table. Only after this selector the vertical-align property can be used.

If the table does use a colspan attribute, the effect can be achieved by combining adequate CSS attribute selectors like [colspan=n] , though this is not trivial.

Examples

Technical summary

Content categories	None.
Permitted content	If the span attribute is present: none. If the attribute is not present: zero or more element
Tag omission	The start tag may be omitted, if it has a element as its first child and if it is not preceded by a whose end tag has been omitted. The end tag may be omitted, if it is not followed by a space or a comment.
Permitted parents	A element. The must appear after any optional element but before any , , , and element.
Implicit ARIA role	No corresponding role
Permitted ARIA roles	No role permitted
DOM interface	HTMLTableColElement

Specifications

Browser compatibility

BCD tables only load in the browser

See also

• CSS properties and pseudo-classes that may be specially useful to style the element:
  • the width property to control the width of the column;
  • the :nth-child pseudo-class to set the alignment on the cells of the column;
  • the text-align property to align all cells content on the same character, like ‘.’.

  Found a content problem with this page?

  This page was last modified on Apr 13, 2023 by MDN contributors.

  Your blueprint for a better internet.

  MDN

  Support

  Our communities

  Developers

  Visit Mozilla Corporation’s not-for-profit parent, the Mozilla Foundation.
  Portions of this content are ©1998– 2023 by individual mozilla.org contributors. Content available under a Creative Commons license.

  Источник

  HTML Table Colgroup

  The element is used to style specific columns of a table.

  HTML Table Colgroup

  If you want to style the two first columns of a table, use the and elements.

  MON	TUE	WED	THU	FRI	SAT	SUN
  1	2	3	4	5	6	7
  8	9	10	11	12	13	14
  15	16	17	18	19	20	21
  22	23	24	25	26	27	28

  The element should be used as a container for the column specifications.

  Each group is specified with a element.

  The span attribute specifies how many columns that get the style.

  The style attribute specifies the style to give the columns.

  Note: There is a very limited selection of legal CSS properties for colgroups.

  Example

  Legal CSS Properties

  There is only a very limited selection of CSS properties that are allowed to be used in the colgroup:

  All other CSS properties will have no effect on your tables.

  Multiple Col Elements

  If you want to style more columns with different styles, use more elements inside the :

  Example

  Empty Colgroups

  If you want to style columns in the middle of a table, insert a «empty» element (with no styles) for the columns before:

  Example

  Hide Columns

  You can hide columns with the visibility: collapse property:

  Источник