Set the background color of the three columns with the <colgroup> and <col> tags:
The <colgroup> tag specifies a group of one or more columns in a table for formatting.
The <colgroup> tag is useful for applying styles to entire columns, instead of repeating the styles for each cell, for each row.
Note: The <colgroup> tag must be a child of a <table> element, after any <caption> elements and before any <thead>, <tbody>, <tfoot>, and <tr> elements.
Tip: To define different properties to a column within a <colgroup>, use the <col> tag within the <colgroup> tag.
Element | |||||
---|---|---|---|---|---|
<colgroup> | Yes | Yes | Yes | Yes | Yes |
Most of the attributes in HTML 4.01 are not supported in HTML5.
Attribute | Value | Description |
---|---|---|
align | left right center justify char |
Not supported in HTML5. Aligns the content in a column group |
char | character | Not supported in HTML5. Aligns the content in a column group to a character |
charoff | number | Not supported in HTML5. Sets the number of characters the content will be aligned from the character specified by the char attribute |
span | number | Specifies the number of columns a column group should span |
valign | top middle bottom baseline |
Not supported in HTML5. Vertical aligns the content in a column group |
width | pixels % relative_length |
Not supported in HTML5. Specifies the width of a column group |
The <colgroup> tag also supports the Global Attributes in HTML.
The <colgroup> tag also supports the Event Attributes in HTML.
HTML DOM reference: ColumnGroup Object
Most browsers will display the <colgroup> element with the following default values: