CSS webpage layout tutorial 7: fixed width center of two columns

In the fixed width of a column, we use the settings such as margi: 0px auto; to enable a div to be displayed in the center, while in the two columns, it is necessary to control that the left and right sides of the left column are equal, so the use of margi: 0px auto; does not seem to be able to achieve the effect of native production, in this case, you need to implement the DIV nesting design. You can use a center Div as the container, and the two divs in the column of the second column are rotated in the container, to display two columns, combined with the above CodeThe new XHTML code structure is as follows: Xmlns = "http://www.w3.org/1999/xhtml">

Left and right columns