Q. Define Colspan and Rowspan?

Now let's see how to work with COLSPAN (Column Span) and ROWSPAN (Row Span). If we want cell containing Ajay in Figure to be extended to the next cell as well and make that area part of its own, we can use COLSPAN attribute. This amounts to merging two cells into one. Those, who are familiar with spreadsheets like Microsoft Excel will recognize this as similar to its "merge cells" feature. As you may have guessed, <ROWSPAN>is just as like <COLSPAN>. Second table in Figure demonstrates COLSPAN, third table shows ROWSPAN and fourth table displays an illustration featuring both ROWSPAN and COLSPAN.