The table tag defines an HTML table. An HTML table consists of the table element and one or more tr and td elements. The th element defines a table header, the tr element defines a table row, and the td element defines a table cell.
Even though it is possible to create nice layouts with HTML tables, tables were designed for presenting tabular data - NOT as a layout tool!
Most websites have put their content in multiple columns (formatted like a magazine or newspaper). Multiple columns are created by using <div> or <table> elements. CSS are used to position elements, or to create backgrounds or colorful look for the pages.