#HTML <col>
The <col> HTML element defines one or more columns in a column group represented by its parent <colgroup> element. The <col> element is only valid as a child of a <colgroup> element that has no span attribute defined.
Please see HTML Element Manual for more information about HTML elements.。
#Attributes
Please see HTML global attributes to learn about the global attributes of HTML elements.
span: Specifies the number of consecutive columns the<col>element spans. The value must be a positive integer greater than zero. If not present, its default value is1.