What does colspan actually do?

Question

I dont get seem a clear picture of colspan in a table.

Answer 1

Colspan is used to span a cell over other cells (horizontally).
Suppose we have a table like this
| 1 | 2 | |
| 3 | 4 | 5|
If we applied colspan="2" attribute to td(2) the table will be like this
| 1 | 2 |
| 3 | 4 | 5|
And if we applied colspan=
"3"
| 1 | 2 |
| 3 | 4 | 5| |
That's it!

Answer 2

Oh..it is clear now.Thanks a lot!

Answer 3

now try grid css way better