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# HTML DOM Columngroup Object * * * ## Columngroup Object The Columngroup object represents a group of columns in an HTML table. Each `` tag in an HTML document creates a Columngroup object. The `` tag is useful for applying styles to all columns, eliminating the need to repeat styles for individual cells and rows. The `` tag can only be used within a `` element. * * * ## Columngroup Object Properties | Property | Description | | --- | --- | | (#) | Sets or returns the value of the span attribute in the column group. | ## Standard Properties and Events The Columngroup object also supports standard (#) and (#). * * * ## Related Pages HTML tutorial: (#) HTML reference: [HTML `` Tag](#) JavaScript reference: (#)